When Liz and the rest of the gang hear a scream in the night, they rush to help. Jessica, the girl they find lying in the dark street, says someone tried to mug her. But she won't let the gang call the police - or even take her home.
Why does Jessica act so strangely. What's in the battered shoulder bag she clutches so fiercely?
The answer is a big surprise. But soon Liz realises that Jessica is in terrible danger. And she's taking the whole gang with her.
