[2] Peter Grant of Metropolitan Police department in charge of magical crimes (AKA The Folly) is called in to assist in a murder investigation.

Constables Peter Grant and Lesley May, and Detective Chief Inspector Thomas Nightingale form the magical branch of the Metropolitan Police.

Grant is called in for a murder investigation at the Baker Street Underground station: the victim, American art student James Gallagher, was fatally stabbed with a pot shard.

Peter realises some of the pieces incorporate pottery identical to the pot shard murder weapon and a bowl found at James's flat.

While Grant is recovering in hospital, Lesley tells him she has confirmed Beale, Gallagher and Carroll are all descendants of the founders of the Unbreakable Empire Pottery corporation.