Guest Stars Adrian Rawlins as DCI Simson Kim Vithana as DI Mariner Kerry Fox as Jackie Warwick Ben Pettengell as Benji Steve Oram as George Sienna De Azevdo as Cassie Rosen Christine Tremarco as Nadya Rosen Tony Hirst as Simon Kendle Phoebe Waller-Bridge as Bee Warwick Bill Smith as Forensics Officer Sofia De Azevdo as Cassie Rosen