ANSWER: Slate stole the secret code when he visited Crypto Cat at 6pm!
EXPLANATION:
Draw a grid like the one below. Place an X in the box where an impossibility occurs. Place a O in the box where a friend occurs.
| 6:45PM | 7:20PM | 8:25PM | Drink | BandAid | Towel | |
|---|---|---|---|---|---|---|
| Slate | O | X | X | X | O | X |
| Joules | X | O | X | O | X | X |
| D. Dog | X | X | O | X | X | O |