In the interview room, the new prime suspect talks about hisspecial connection to Ellen Quinn. He claims that his funeralrites were an act of love, part of an ancient religion. ButTosh and Calder see an attempt to destroy evidence.While Graceberates Calder and Tosh over their handling of the case,Stella is stunned to discover Ellen had a secret friendshipwith Tom Knox and decides to pay him a visit.Following Jean'sshocking revelation, Calder sits on her fears about her fatherand Stella. However, when her secret background check on Ammareturns a surprising link to Ellen Quinn, she must come cleanto an unimpressed Tosh.When secret letters signed off with themysterious symbol are uncovered at the home of Tosh's primesuspect, the team ask if his pen pal might be an accomplice tomurder.At the same time, hospital security records bring oneof Ellen's friends into the frame. Tosh and Calder track theirlatest suspect down to a remote location where they make astartling discovery.
A man is found dead on a sofa after falling asleep next to hisson. As the coroner's team investigate, they discover he wasinvolved in a road traffic accident eight months earlier thatcould link to his death. The officers also investigate whetheran altercation in a car park played any part in the death of anelderly woman.
While the team tracks the mysterious tunnel toward the BabyBlob, Lot 5 continues to deliver when Rick and Gary discoveran unusual artifact marked with the same Roman numerals foundon the U-shaped structure in Smith's Cove.
Dhan spearheads the search for a missing unhoused man who'sbeen an integral part of a tight-knit encampment; whenDetective Trent shares troubling news about Sir, Gabi goes togreat lengths to protect her secret.