When Andreas vanishes, it is a mystery to all, including his best friend.

But as much as the police question him it's not easy for Zipp to come forward with details of the last time he saw his friend.

They had been shadowing an old woman, an easy target for some quick cash, and Andreas, brandishing his knife, boldly followed her into her home.

The next moment he was gone. Zipp had waited anxiously outside but Andreas failed to reappear...