Reporter Sonia Thompson discovers threads linking prominent members of Riverpool society with the chamber of horrors in a neglected waxworks museum. Married Lilith Nile is using it as a place to meet Sir Julian. Schoolteacher Miss Monroe is obsessed with the moth-eaten figure of Mary of England. And why does Mr Cuttle, the amorous Alderman, take such a keen interest in the museum?
When Sir Julian, having spent the night in the waxworks for a bet, is found dead, and an epidemic of purse-snatching sweeps Riverpool, Sonia realises that she is on the verge of uncovering a sinister plot.
Forced to bring matters to a head, Sonia resolves to spend a night alone in the waxworks ...