Guest Stars Jason Merrells as David Blackwell Christine Tremarco as DS Becky Gallagher Harriet Cains as Louisa Blackwell Nicola Stephenson as Ali Blackwell Kelly Harrison as Susan Reynolds Peter Ferdinando as Michael Collersdale Max True as Joe Blackwell Nicholas Moss as Ben Sarah Smart as Megan Eleanor Samson as Gemma Underwood Macaulay Harewood as Dominic Twyler
