Gerry is spooked by the discovery of UCOS's latest victim: his old DCI, whose body has lain untouched under a basement for 30 years. As deep-rooted accusations of police corruption and underhand dealings begin to surface, Gerry has to face up to some skeletons in his own closet, and it's a race against time for the team to help before his murky past catches up with him. While he's supposed to be babysitting his grandson, Gerry is convinced only he holds the key to the investigation and leaves the team quite literally holding the baby as he goes Awol in a bid to uncover the truth.