Last modified on Mon 1 Mar 2021 17.02 EST The investigation Cassieâs mean machine of diligent rozzers really gets motoring this week and we now have a much better picture of our suspects. Fiona and Deanâs early exits from the force raise a few eyebrows, but the real bombshell detonates when the incoming chief constable of East Anglia is placed in the Ford Granada on the fateful night in 1990. What might she have to say about the witness who saw Matthew Walsh being chased by an Asian man on the night of his disappearance? Less surprising are Walshâs convictions for ABH, and possessing and dealing drugs, along with a warrant for skipping bail. Son Jerome never knew him and never cared to, but might be able to put Cassie in touch with Matthewâs older brother Clive. The gaffer is loving this one. Thereâs nothing quite like chasing a good lead.