Guest Stars Jay Simpson as DS Ron Singer Ruta Gedmintas as Teresa Morgan Jamie Sives as Jeb Colman Linda Marlowe as Lynn Brand Pooky Quesnel as Ruth Hyde Alan Williams as Frank Lawson Jade Ogugua as DC Lenny Jackson Tom Beard as DSI Alan Reece Arsher Ali as DS Vinesh Roy David Pusey as DC Max Cauldwell Teddy Fitzpatrick as Young Luke Reid Daniel Runacres-Grundstrom as Callum Reid Tommy Potten as Sam Colman Jude Foley as Older Luke Reid Theo Barklem-Biggs as Jason Byrne Nicola Sian as Miss Brenner Madlen Meyer as Nina Huber Christopher Fulford as Tom Rose Cleo Sylvestre as Ilse Lawson Milo Twomey as Joe Wightman Natascha Slasten as Heike Huber