To Crack A Nut

Monroe leads an operation into cracking down on prostitution in the borough. Ackland and Jarvis tackle kerb crawlers, while Quinnan goes undercover as a prostitute's punter in an attempt to gather evidence on the madam of a brothel. However, Boyden suspects that Quinnan may have overstepped the mark and taken a shine to the girl when he tries to protect her from his angry line of questioning during interview.