Ooh, things are getting really murky now, with all the suspects looking increasingly dodgy.

Their home lives looked so happy at the start of the series, but tensions and suspicions are building and cracks are appearing in each of their relationships!

More harrowing information comes to light about the childhood of the victim, David Walker, as the cops follow another lead that takes them to a very stroppy Marion.

Colin, meanwhile, decides how to deal with the blackmail and David’s son Jason wants to say goodbye to his dad, but his mum Tessa is acting strangely.

It’s not all plain sailing for the cops, either, with Cassie challenging her dad about what he has been up to, while Sunny is heading out on a date!