Marc Warren (Messiah: The Rapture, Hustle) is Martin; Alexander Armstrong (The Armstrong & Miller Show, Life Begins) is Patrick; and Keeley Hawes (Ashes To Ashes, Spooks) is Jen.
The series also stars Sarah Alexander, Claire Rushbrook, Naomi Bentley, Rhashan Stone, Lee Ross and Emily Joyce.
Patrick talks Martin into taking on the case against Harry and stealing secret files from his office. In the midst of the wedding preparations, Liz starts to doubt her true feelings and Dev's passion for Leigh comes to a head at a regatta. Later, in court, Martin is on fighting form - but the trial doesn't go to plan.