Liverpool 1

DC Isobel de Pauli is transferred to the vice squad at Bridewell, Liverpool 1.

Callaghan and de Pauli try to trace a missing young girl with a conviction for prostitution. Both are interrogated about the arrest of Mikey Sullivan.

DC Callaghan and de Pauli interview a convicted paedophile in connection with the disappearance of a young boy.

DC de Pauli investigates a case of petty violence and is drawn into John Sullivan's gangland past.

The vice squad investigates the murder of a prostitute. DCs Callaghan and de Pauli find their private lives dragged into the station.

A surveillance operation is threatened, and DC de Pauli is forced to choose between the job and her fiancee.