After double crossing local gangster Jack Crooks, abusive husband Lionel knows that the net is closing in on him. Henchmen Eddie Bell and Percival Sullivan have got him in their sights and it's only a matter of time before they 'turn his lights out' for good! His long suffering wife Peaches also has her mind set on his demise and with the help of her friend and the weird and eccentric Dr Henrick Oldcorn, she sets the wheels in motion for his eradication. Lionel knows that his days are numbered, but he isn't about to hang about to see who gets him first, and he quickly plans his escape.

Detective Sherlock Holmes and Dr. John Watson join forces to investigate a murder at Buckingham Palace. They soon learn that they have only four days to solve the case, or the queen will become the next victim.