D.I. Rabbit's been chasing Victorian London's criminals for as long as he can remember but he's not as young as he was and his heart keeps stopping, so he's forced to investigate the murder of a cabaret girl with two new young partners.

D.I. Rabbit's been chasing Victorian London's criminals for as long as he can remember but he's not as young as he was and his heart keeps stopping, so he's forced to investigate the murder of a cabaret girl with two new young partners.

Rabbit is excluded from his team's undercover investigation of youth gangs and sent to investigate a series of deaths at and old people's home, leading to him questioning if he is getting too old for police work.

A mystery sniper is killing in London, and Rabbit has to protect a visiting Prince of Bulgaria. He also deals with the Prince's sister, his old sniper flame, and UK's latest novelty - the telephone. Lydia grooms Mabel for her organization.

When a seemingly mad poisoner takes a group of young women hostage and threatens to release deadly gas if the police storms in, Rabbit must resolve the crisis before the female con he loves is executed for her crimes.

Things are not looking good for Rabbit as it's clear he's been framed for murder - or committed a murder. Either way, he's on the run, but Strauss and Mabel refuse to believe he's guilty.