Gemma and Terry are now private investigators. Bad ones. But, as luck would have it, they have in their possession a valuable collector's piece that the murderous Bunnyman will stop at nothing to acquire. Gemma lays a trap for The Bunnyman while Terry heads up his own very low-quality investigation.

The series finale sees a twisted serial killer on the loose and only Terry and Gemma's coach tour knowledge can help police find the murderer. Will they solve the clues he leaves them and catch the psychopath before more bodies litter the Yorkshire Dales?