Appleton Porter Mystery
1 The Spy Game (1980)
2 Spy On the Run (1982)
3 The Spy With His Head in the Clouds (1982)
4 Apple Spy in the Sky (1983)
5 Apple to the Core (1983)
6 How Green Was My Apple (1984)
7 The Only Good Apple in a Barrel of Spies (1982)
8 The Spy Who Got His Feet Wet (1985)
9 Good Spies Don't Grow On Trees (1986)
10 The Spy Who Barked In The Night (1986)
11 That Great Big Trenchcoat in the Sky (1988)
12 The Spy Who Fell Off the Back of a Bus (1988)
13 Ethel and the Naked Spy (1989)
14 Comfort Me With Spies (1990)
2 Spy On the Run (1982)
3 The Spy With His Head in the Clouds (1982)
4 Apple Spy in the Sky (1983)
5 Apple to the Core (1983)
6 How Green Was My Apple (1984)
7 The Only Good Apple in a Barrel of Spies (1982)
8 The Spy Who Got His Feet Wet (1985)
9 Good Spies Don't Grow On Trees (1986)
10 The Spy Who Barked In The Night (1986)
11 That Great Big Trenchcoat in the Sky (1988)
12 The Spy Who Fell Off the Back of a Bus (1988)
13 Ethel and the Naked Spy (1989)
14 Comfort Me With Spies (1990)
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