Gemma tells lies. Her best friend says she does. Gemma claims to have all the latest technology - TV, video, computer - in her bedroom just as Best Friend does, as well as the newest, coolest clothes. Best Friend knows she doesn't have these things, and in order to prove it, invents a lie detector. But the truth comes out when she embarrasses Gemma in front of their school friends, and they turn on her. It is Best Friend, the narrator of the story, who has caused the problem by flaunting her own possessions. A telling story about having to learn your own weaknesses the hard way.