Guest Stars Ruta Gedmintas as Teresa Morgan Jamie Sives as Jeb Colman Jay Simpson as DS Ron Singer Pooky Quesnel as Ruth Hyde Alan Williams as Frank Lawson Linda Marlowe as Lynn Brand Teddy Fitzpatrick as Young Luke Reid Arsher Ali as DS Vinesh Roy Tom Beard as DSI Alan Reece Jade Ogugua as DC Lenny Jackson Daniel Runacres-Grundstrom as Callum Reid Tommy Potten as Sam Colman Jude Foley as Older Luke Reid David Pusey as DC Max Cauldwell Adam Kotz as Dr Mike Rountree Joe Zanetti as Felix Hyde Christopher Fulford as Tom Rose Nicola Sian as Miss Brenner Rick Bacon as Educational Psychologist Lorraine Hilton as Sister Anne Jenny Howe as Child Psychologist