A Jack Production
Your sons, 13-year old Gage and 12-year old Garret,
have lost the use of their video games for a week. Garret was especially upset, because he was playing a game on his Nintendo 3DS handheld, and he had to finish a challenge by a certain date to receive a special character for the game.
When you left for work today, the game consoles were in the garage, locked in a cabinet, and the game cartridges were in a shoe box, in your closet. The handheld games were in your desk drawer.
When you came home, after cleaning up and changing clothes, you go to your office. You're very particular about how you leave things, so you know someone's been in there. Sure enough, when you check the drawer where the games are, it's obvious to you that someone had removed one of the games and put it back, because there's no way it's in the same place.
The boys are the only ones who've been home, so you ask them. Both of them say they didn't do anything with the game, and that they haven't even been in your office. They also say no one else has been over, so you know one of them has to be lying.