Cathy Williams

   Marriages by Arrangement (2000) (with Diana Hamilton and Anne Weale)
   His Secretary Bride (2000) (with Kim Lawrence)
   Nine to Five (2001) (with Kim Lawrence and Sandra Marton)
   Passion in Paradise (2004) (with Jacqueline Baird and Sara Craven)
   His Boardroom Mistress (2005) (with Helen Bianchin and Sandra Marton)
   Secrets and Sins... Revealed! / From Lust to Love (2005) (with Miranda Lee)
   Love in the City (2005) (with Miranda Lee and Anne McAllister)
   Her Nine Month Miracle (2005) (with Barbara Hannay and Marion Lennox)
   Falling for the Boss (2005) (with Helen Brooks and Barbara McMahon)
   Millionaire's Mistress (2006) (with Jacqueline Baird and Lynne Graham)
   Their Secret Child (2006) (with Kim Lawrence and Jane Porter)
   Models & Millionaires Bundle (2006) (with Julia James)
   Red-Hot Revenge (2006) (with Jacqueline Baird and Lee Wilkinson)
   The Tycoon's Virgin (2007) (with Daphne Clair and Sandra Field)
   His Convenient Woman (2007) (with Diana Hamilton and Barbara McMahon)
   Lusty Billionaires Bundle (2007) (with Carol Marinelli and Lucy Monroe)
   One-Click Buy: November 2007 Harlequin Presents (2007) (with others)
   In Bed with the Boss (2007) (with Maggie Cox and Miranda Lee)
   One-Click Buy: March Harlequin Presents (2008) (with others)
   Her Secret Child (2008) (with Sharon Kendrick and Miranda Lee)
   The Italian's Bride Bundle (2008) (with others)
   Taken by the Boss (2009) (with Leigh Michaels and Carole Mortimer)
   Best of Bosses 2008 (2009) (with Barbara Hannay and Kate Hardy)
   Her Billionaire Boss (2009) (with Jessica Hart and Kathryn Ross)
   One-Click Buy: June 2009 Harlequin Presents (2009) (with others)
   Won by the Wealthy Greek (2009) (with Susan Stephens and Meredith Webber)
   Mistress to a Latin Lover (2009) (with Melanie Milburne and Jane Porter)
   The Greek Tycoon Wants a Wife (2009) (with Jacqueline Baird and Lynne Graham)
   Chosen by the Greek Tycoon (2009) (with Susan Stephens and Kate Walker)
   Ruthless Tycoon, Inexperienced Mistress / Capelli's Captive Virgin / Virgin Mistress, Scandalous Love-Child (2009) (with Jennie Lucas and Sarah Morgan)
   Snow, Satin and Seduction Bundle (2009) (with others)
   Latin Lovers & Greek Husbands Bundle (2010) (with others)
   The Italian Boss's Passion (2010) (with Maggie Cox and Michelle Reid)
   Bridegroom Bosses (2010) (with Jessica Hart and Susan Stephens)
   Irresistible Bosses & Expectant Mistresses Bundle (2010) (with others)
   Best of Virgins Bundle (2010) (with others)
   Claiming His Secret Love-Child (2011) (with Maggie Cox and Melanie Milburne)
   Brides for the Billionaires (2011) (with Helen Brooks and Carole Mortimer)
   The Latin Lovers Collection (2011) (with others)
   Latin Lovers: Passionate Spaniards (2011) (with Maggie Cox and Meredith Webber)
   His Suitable Bride (2012) (with Abby Green and Kate Walker)
   Summer Surrender (2012) (with Sarah Morgan and Susan Stephens)
   Sultry Nights (2012) (with Abby Green and Annie West)
   The Notorious Gabriel Diaz / Ruthless Tycoon, Inexperienced Mistress (2013)
   A Rich Man's Whim / The Secret Casella Baby (2013) (with Lynne Graham)
   The Spaniard's Summer Seduction (2013) (with Maggie Cox and Kim Lawrence)
   Harlequin Presents August 2013 - Bundle 2 of 2 (2013) (with others)
   Wicked Surrender (2013) (with Daphne Clair and Sara Craven)
   Harlequin Presents January 2014 - Bundle 2 of 2 (2014) (with others)
   Out of hours...Cinderella Secretary (2014) (with Helen Brooks and Sharon Kendrick)
   Pretender to the Throne / Enthralled by Moretti (2014) (with Maisey Yates)
   Harlequin Presents March 2014 - Bundle 1 of 2 (2014) (with others)
   Secrets of a Ruthless Tycoon / The Truth About De Campo (2014) (with Jennifer Hayward)
   8 Magnificent Millionaires (2014) (with others)
   His Forbidden Diamond / The Argentinian's Demand (2014) (with Susan Stephens)
   Harlequin Presents August 2014 - Bundle 2 of 2 (2014) (with others)
   Six Greek Heroes (2014) (with others)
   The Uncompromising Italian / A Deal Before the Altar (2014) (with Rachael Thomas)
   Harlequin Presents October 2014 - Box Set 2 of 2 (2014) (with others)
   Christmas Seduction (2014) (with Michelle Celmer and Sarah Morgan)
   A Magical Christmas (2014) (with others)
   The Secret His Mistress Carried / To Sin with the Tycoon (2014) (with Lynne Graham)
   Awakening the Ravensdale Heiress / Wearing the De Angelis Ring (2015) (with Melanie Milburne)
   One Night with Her Brooding Boss (2015) (with Red Garnier and Susan Stephens)
   Modern Romance March 2015 Collection 2 (2015) (with others)
   One Night with Collection (2015) (with others)
   The Taming of Xander Sterne / The Real Romero (2015) (with Carole Mortimer)
   Harlequin Presents March 2015 - Box Set 1 of 2 (2015) (with others)
   Harlequin Presents May 2015 - Box Set 2 of 2 (2015) (with others)
   The Sheikh's Secret Babies / At Her Boss's Pleasure (2015) (with Lynne Graham)
   Married for His Heir (2015) (with Lynne Graham)
   Bound by the Billionaire's Baby / The Sheikh's Wedding Contract (2015) (with Andie Brock)
   Harlequin Presents July 2015 - Box Set 1 of 2 (2015) (with others)
   Modern Romance July 2015 Books 1-4 (2015) (with others)
   Harlequin Presents September 2015 - Box Set 1 of 2 (2015) (with others)
   Modern Romance September 2015 (2015) (with others)
   The Wedding Night Debt / The Return of Antonides (2015) (with Anne McAllister)
   Harlequin Presents October 2015 - Box Set 2 of 2 (2015) (with others)
   Modern Romance October 2015 Books 1-4 (2015) (with others)
   Castelli's Virgin Widow / The Surprise De Angelis Baby (2016) (with Caitlin Crews)
   Engaged to Her Ravensdale Enemy / Seduced into Her Boss' Service (2016) (with Melanie Milburne)
   The Best Of The Year (2016) (with others)
   The Best Of The Year - Modern Romance (2016) (with others)
   Harlequin Presents January 2016 - Box Set 2 of 2 (2016) (with others)
   Leonetti's Housekeeper Bride / The Surprise De Angelis Baby (2016) (with Lynne Graham)
   Seven Sexy Sins (2016) (with others)
   Harlequin Presents February 2016 - Box Set 2 of 2 (2016) (with others)
   The Ultimate Persuasion (2016)
   Harlequin Presents April 2016 - Box Set 1 of 2 (2016) (with others)
   His Most Exquisite Conquest (2016) (with Robyn Donald and Elizabeth Power)
   Modern Romance April 2016 Books 1-4 (2016) (with others)
   The Billionaire's Ruthless Affair / A Virgin for Vasquez (2016) (with Miranda Lee)
   Harlequin Presents July 2016 - Box Set 1 of 2 (2016) (with others)
   Modern Romance July 2016 Books 1-4 (2016) (with others)
   Heir To His Legacy (2016) (with Lucy Monroe and Chantelle Shaw)
   Harlequin Presents November 2016 - Box Set 2 of 2 (2016) (with others)
   Modern Romance November 2016 Books 1-4 (2016) (with others)
   British Bachelors: Rich and Powerful (2016) (with Maggie Cox and Nina Harrington)
   The Mistresses Collection (2016) (with others)
   Mistresses: Enemies To Lovers (2016) (with Maureen Child and Caitlin Crews)
   Special Deliveries: Her Nine-Month Secret (2016) (with Dani Collins and Charlene Sands)
   Bought to Wear the Billionaire's Ring / Acquired by Her Greek Boss (2017) (with Chantelle Shaw)
   The British Bachelors Collection (2017) (with others)
   Special Deliveries (2017) (with Dani Collins and Charlene Sands)
   The Best Of The Year - Modern Romance 2016 (2017) (with others)
   Harlequin Presents February - Box Set 2 of 2 (2017) (with others)
   Modern Romance February 17 Books 1-4 (2017) (with others)
   Rags To Riches (2017) (with others)
   Deal With The Devil (2017) (with Michelle Conder and Jennifer Hayward)
   Rags To Riches: At Home With The Boss (2017) (with Elizabeth Lane and Gina Wilkins)
   Harlequin Presents June 2017 - Box Set 1 of 2 (2017) (with others)
   The Italian Bachelors Collection (2017) (with others)
   Italian Bachelors: Brooding Billionaires (2017) (with Leanne Banks and Lynne Graham)
   Modern Romance Collection: June 2017 Books 1 - 4 (2017) (with others)
   Summer Loving (2017) (with others)
   Italian Bachelors: Ruthless Propositions (2017) (with Leanne Banks and Fiona Harper)
   Claiming His One-Night Baby / Cipriani's Innocent Captive (2017) (with Michelle Smart)
   One Night Of Consequences Collection (2017) (with others)
   Harlequin Presents September 2017 - Box Set 2 of 2 (2017) (with others)
   Modern Romance September 2017 Books 1 - 4 (2017) (with others)
   Legacy of His Revenge / Carrying His Scandalous Heir (2017) (with Julia James)
   One Night Of Blissful Seduction (2017) (with Heidi Betts and Lynne Graham)
   Harlequin Presents December 2017 - Box Set 1 of 2 (2017) (with others)
   Modern Romance Collection: December 2017 Books 1 - 4 (2017) (with others)
   The Complete Boardroom Collection (2018) (with others)
   Harlequin Presents March 2018 - Box Set 1 of 2 (2018) (with others)
   Modern Romance Collection: March 2018 Books 1 - 4 (2018) (with others)
   Innocent In The Boardroom (2018) (with Janice Maynard and Joss Wood)
   Harlequin Presents June 2018 - Box Set 1 of 2 (2018) (with others)
   Modern Romance Collection: June 2018 Books 1 - 4 (2018) (with others)
   The Revenge Collection 2018 (2018) (with others)
   Ruthless Revenge: Passionate Possession (2018) (with Maya Blake and Chantelle Shaw)
   Harlequin Presents August 2018 - Box Set 1 of 2 (2018) (with Sharon Kendrick and Chantelle Shaw)
   Modern Romance August 2018 Books 1-4 Collection (2018) (with others)
   Greek Tycoon Collection (2018) (with Helen Bianchin and Carol Marinelli)
   Modern Romance October 2018 Books 5-8 (2018) (with others)
   Harlequin Presents November 2018 - Box Set 1 of 2 (2018) (with others)
   Scandalous Sins (2018) (with Melanie Milburne and Tara Pammi)
   Mills & Boon Stars Collection: Sinful Proposals (2019)
   Mills & Boon Stars: Sinful Proposals (2019)
   Harlequin Presents March 2019 - Box Set 1 of 2 (2019) (with others)
   Italian Mavericks: A Deal With The Italian (2019) (with Jennifer Hayward and Elizabeth Power)
   Love Islands: Red-Hot Sunsets (2019) (with Jules Bennett and Jane Porter)
   Marriage Bargain with His Innocent / Pregnant by the Commanding Greek (2019) (with Natalie Anderson)
   The Mills & Boon Stars Collection (2019) (with others)
   Harlequin Presents May 2019: Box Set 2 of 2 (2019) (with others)
   Modern Romance May 2019: Books 5-8 (2019) (with others)
   Secret Heirs: Baby Bargain (2019) (with Abby Green and Anne Mather)
   Love Islands: Passionate Nights (2019) (with Louise Fuller and Jennifer Hayward)
   Rumours: The Legacy Of Revenge (2019) (with Clare Connelly and Melanie Milburne)
   Second Chance At Sea (2019) (with Ellie Darkins and Jessica Gilmore)
   Second Chance By The Sea (2019) (with Ellie Darkins and Jessica Gilmore)
   Mediterranean Mavericks: Christmas Conquest (2019) (with Melanie Milburne and Lucy Monroe)
   Shock Marriage For The Powerful Spaniard / The Greek's Virgin Temptation (2019) (with Susan Stephens)
   Harlequin Presents September 2019 - Box Set 1 of 2 (2019) (with others)
   Greek Mavericks: For The Greek's Revenge (2019) (with Jennie Lucas and Tara Pammi)
   The Italian's Christmas Proposition / Christmas Baby For The Greek (2019) (with Jennie Lucas)
   Harlequin Presents November 2019 - Box Set 2 of 2 (2019) (with others)
   Mediterranean Mavericks: Greeks (2020) (with others)
   Secret Heirs: Price Of Success (2020) (with Lynne Graham and Lynn Raye Harris)
   Hidden Desire (2020) (with Karen Rose Smith and Maisey Yates)
   Mistresses: Seduction In The Boardroom (2020) (with Abby Green and Sandra Marton)
   Secret Heirs And A Forever Family (2020) (with others)
   Secret Heirs Collection (2020) (with others)
   His Secretary's Nine-Month Notice / The Secret Kept From The King (2020) (with Clare Connelly)
   Rumours Collection (2020) (with others)
   Expecting His Billion-Dollar Scandal / Shy Queen In The Royal Spotlight (2020) (with Natalie Anderson)
   Harlequin Presents May 2020 - Box Set 1 of 2 (2020) (with others)
   Modern Romance May 2020 Books 1-4 (2020) (with others)
   Harlequin Presents June 2020 - Box Set 1 of 2 (2020) (with others)
   Spanish Scandals: Risking It All (2020) (with Carol Marinelli and Trish Morey)
   A Surprise Family: Proving Their Love (2020) (with Merline Lovelace and Sara Orwig)
   The Forbidden Cabrera Brother / One Night On The Virgin's Terms (2020) (with Melanie Milburne)
   Harlequin Presents September 2020 - Box Set 1 of 2 (2020) (with others)
   Modern Romance September 2020 Books 5-8 (2020) (with others)
   Christmas Brides Collection (2020) (with others)
   Dangerous Liaisons: Desire (2020) (with Caitlin Crews and Cat Schield)
   Forbidden Hawaiian Nights / Waking Up In His Royal Bed (2021) (with Kim Lawrence)
   Harlequin Presents February 2021 - Box Set 1 of 2 (2021) (with others)
   Spanish Scandals Collection (2021) (with others)
   The Surprise Families And Billionaire Bosses Collection (2021) (with others)
   The Surprise Families Collection (2021) (with others)
   Australian Nights: Sun, Sea, Seduction (2021) (with Robyn Grady and Nicola Marsh)
   Harlequin Presents May 2021 - Box Set 2 of 2 (2021) (with others)
   Modern Romance April 2021: Books 1-4 (2021) (with others)
   Promoted To The Italian's Fiancee / Pregnant With His Majesty's Heir (2021) (with Annie West)
   Harlequin Presents August 2021 - Box Set 2 of 2 (2021) (with others)
   The Secret Behind The Greek's Return / Claiming His Cinderella Secretary (2021) (with Michelle Smart)
   The Dangerous Liaisons Collection (2021) (with others)
   Italian Playboys: Tycoons (2021) (with Jennifer Faye and Chantelle Shaw)
   Italian Playboys: Proposals (2021) (with others)
   Desert King's Surprise Love-Child / The Innocent's Protector In Paradise (2021) (with Annie West)
   Harlequin Presents December 2021 - Box Set 2 of 2 (2021) (with others)
   Secrets And Seduction: The Lying Game (2022) (with Janice Maynard and Cat Schield)
   Forbidden To The Powerful Greek / Consequences Of Their Wedding Charade (2022) (with Carol Marinelli)
   Harlequin Presents March 2022 - Box Set 1 of 2 (2022) (with others)
   The Italian Playboys Collection (2022) (with others)
   Secrets And Seduction: All Or Nothing (2022) (with Sarah M Anderson and Sharon Kendrick)
   Banished Prince To Desert Boss / Hired By The Forbidden Italian (2022) (with Heidi Rice)
   Harlequin Presents May 2022 - Box Set 2 of 2 (2022) (with others)
   Modern Romance April 2022: Books 1-4 (2022) (with others)
   Bachelor Bosses: The Deal (2022) (with Nadine Gonzalez and Joan Hohl)
   Bound By A Nine-Month Confession / Destitute Until The Italian's Diamond (2022) (with Julia James)
   Harlequin Presents August 2022 - Box Set 2 of 2 (2022) (with others)
   Modern Romance July 2022 Books 5-8 (2022) (with others)
   Passionate Encounters: A Price Worth Paying (2022) (with Lynne Graham and Catherine Mann)
   Italian Summers: Secrets And Lies (2022) (with Kate Hewitt and Carol Marinelli)
   Passion In Paradise: Sunset Proposals (2022) (with Annie West and Maisey Yates)
   The Complete Christmas Collection 2022 (2022) (with others)
   Harlequin Presents November 2022 - Box Set 2 of 2 (2022) (with others)
   Italian Summers:The Billionaire's Bargain (2022) (with Janette Kenny and Kim Lawrence)
   Mistletoe Moments Collection (2022) (with others)
   Passion In Paradise: Holiday Fling (2022) (with Lindsay Evans and AlTonya Washington)
   The Bachelor Bosses And Enemies To Lovers Collection (2022) (with others)
   The Bachelor Bosses Collection (2022) (with others)
   Tempted By The Tycoon: Playing With Fire (2022) (with Lynne Graham and Julia James)
   The Italian Summers Collection (2023) (with others)
   The Passion In Paradise Italian Summers Collection (2023) (with others)
   The Passion In Paradise Collection (2023) (with others)
   Harlequin Presents March 2023 - Box Set 1 of 2 (2023) (with others)
   The Housekeeper's Invitation To Italy / Reunited By The Greek's Baby (2023) (with Annie West)
   Modern Romance Collection February 2023: Books 1-4 (2023) (with others)
   Irresistable Italians: A Scandalous Proposition (2023) (with Miranda Lee and Melanie Milburne)
   Tempted By The Tycoon: The Ultimate Seduction (2023) (with Michelle Celmer and Stefanie London)
   Harlequin Presents May 2023 - Box Set 1 of 2 (2023) (with others)
   Irresistible Italians: A Price To Pay (2023) (with Dani Collins and Carol Marinelli)
   The Italian's Innocent Cinderella / The Housekeeper And The Brooding Billionaire (2023) (with Annie West)
   The Italian's Innocent Cinderella / The Housekeeper And The Brooding Billionaire (2023) (with Annie West)
   Modern Romance Collection April 2023: Books 1-4 (2023) (with others)
   Sins And Seduction: A Deal In Passion (2023) (with Melanie Milburne and Yahrah St John)
   The Tempted By The Tycoon Collection (2023) (with others)
   Irresistible Italians: A Holiday Proposal (2023) (with Ellie Darkins and Lucy Gordon)
   European Escapes: Madrid (2023) (with Clare Connelly and Sheryl Lister)
   Harlequin Presents August 2023 - Box Set 1 of 2 (2023) (with others)
   The Maid Married To The Billionaire / Unveiled As The Italian's Bride (2023) (with Lynne Graham)
   Sinfully Yours: The Boss (2023) (with Heidi Betts and Yahrah St John)
   The Irresistible Italians And The Crown Collection (2023) (with others)
   The Irresistible Italians Collection (2023) (with others)
   Bound by Her Baby Revelation / One Forbidden Night in Paradise (2023) (with Louise Fuller)
   Harlequin Presents January 2024 - Box Set 1 of 2 (2023) (with others)
   Hot Italian Days (2024) (with Melanie Milburne and Chantelle Shaw)
   The Sinfully Yours Collection (2024) (with others)
   Harlequin Presents May 2024: Box Set 1 of 2 (2024) (with others)
   Modern Romance Collection April 2024: Books 1-4 (2024) (with others)
   Two Secrets To Shock The Italian / A Wedding Negotiation With Her Boss (2024) (with Lynne Graham)
   The European Escapes Collection (2024) (with others)
   Contracted To Him: Royally Promoted / Signed, Sealed, Married (2024) (with Annie West)
   Harlequin Presents July 2024 - Box Set 2 of 2 (2024) (with others)
   Modern Romance June 2024: Books 1-4 (2024) (with others)
   Harlequin Presents October 2024 - Box Set 2 of 2 (2024) (with others)
   Secrets Behind His Ring (2024) (with Lorraine Hall)
   Forbidden Yet Claimed (2024) (with Emmy Grayson)
   Harlequin Presents January 2025 - Box Set 1 of 2 (2024) (with others)
   Modern Romance Collection December 2024: Books 1-4 (2024) (with others)
   Office Romance Collection (2025) (with Tara Pammi and Michelle Smart)
   Out Of Office (2025) (with Jackie Ashenden)
   Reclaim Me (2025) (with Dani Collins)