| 9 | Sunday | First investigation of the mystery house. |
| 10 | Monday | Tom tells his classmates about detective work. Second investigation of the mystery house. |
| 11 | Tuesday | Uneventful |
| 12 | Wednesday | Uneventful |
| 13 | Thursday | Dianne gets kidnapped. |
| 14 | Friday | Tom tells about kidnapping.
Valentine's Day. |
| 15 | Saturday | Tom meets Dietmar and Charity at the Forks.
Tom finds the articles at the library. |
| 16 | Sunday | Jets game.
Tom meets Charity's mom. |
| 17 | Monday | Ceremony at Legislative Building
Dietmar stays after class |
| 18 | Tuesday | Tom's cryptogram book stolen |
| 19 | Wednesday | Field trip to planetarium Tom finds Rex's hideout Tom's parents come home |
| 20 | Thursday | Field trip to Muskeg |
| 21 | Friday | Tom and Sadie rescue Dianne and capture kidnappers |