Taffy has come in for a shift before taking his holidays. He is worried he will miss his flight. He tries to saw a bed rail to remove a prisoner but ends up removing the bed head instead. Brownlow is trying to cut spending and tells Burnside that for the present they will have to use the buses. Carver misses his on the way to a supermarket to see about staff pilfering. He wrenches his ankle getting off the bus after a butcher smuggling meat out in his clothes. Penny is going by the PACE book

Boulton and Holmes investigate the latest in a long line of arson attacks. When forensic evidence places teen tearaway Adam Marrs at the scene of a previous fire, he is questioned and confesses to all of the recent attacks. However, a profiler brought in by Deakin to assist on the case isn't so sure that Marrs is responsible for the latest fire. Investigations reveal that the security guard on duty at the time was actually away from his post, moonlighting for another firm. When it is revealed that he abducted and tried to rape a young girl at the property, his evidence is discounted. Deakin's profiler seems to think that a serving fireman is responsible, but will her theory be proved right? Boulton isn't entirely convinced.