Stuart plays a practical joke on Phil that ruins his investigation into a robbery at a nail bar. When Jack comes across the pair fighting in CID he jumps to the conclusion Phil is the guilty party and would learn more respect for the job by having a spell back on the beat in uniform. Roger is not impressed when Lewis ropes him into laborious paperwork to get some background on the mysterious skull Tash's brother Rudy discovered a few weeks ago, but his hard work discovers a link to a teenage girl who disappeared in the 1980s.
