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