To the young Mrs. Napier the man at the door seems anything but sinister, just buying old gold. But his method of purchase leaves something to be desired.

Lynch is on the trail of an artist of a thief who broke into the Seaport Supermarket.

Graham and Baker set out to look for a stolen car but instead come upon a far less trivial incident. Someone has disappeared and the disappearance may be permanent. Barlow has no choice but to call in the 'heavy brigade' from Headquarters.