| # | Book Title | Author | |
|---|---|---|---|
| 1 | Case of the Hungry Stranger, The | Bonsall, Crosby Newell | |
| 2 | Case of the Cat's Meow, The | Bonsall, Crosby Newell | |
| 3 | Case of the Dumb Bells, The | Bonsall, Crosby Newell | |
| 4 | Case of the Scaredy Cats, The | Bonsall, Crosby Newell | |
| 5 | Case of the Double Cross, The | Bonsall, Crosby Newell |