Special Guest Stars Peter Gallagher as Arthur Campbell Guest Stars Rya Kihlstedt as Helen Newman Steven Brand as James Elliot Co Starring Avigail Humphreys as Chloe Brooks Adelaide Humphreys as Katia Brooks Andrew Moodie as Andrew Branch Fuad Ahmed as Stu Dylan Authors as Walter Newman Richard Stewart as Detective #2 Danny Waugh as DPD Analyst Greg Myers as Walk-in #2 Brad Borbridge as Parker Melissa Kramer as Receptionist Joe Sacco as Detective #1 Sarah Plommer as Walk-in #1 Shaun Austin-Olsen as Michael Cahill Brian Young as Walk-in #3