Guest Stars Christopher Cowlin as Police Officer Mabel Watson as Rosie Chamberlain Edmond Moulton as Young Luke Sean Gilder as Jim Clout Zoe Telford as DCI Jane De Freitas Steve Wall as DCS Robert Drake Sam Lathem as Duty Sergeant Jenny Ogilvie as Sheila Cross Sarah MacRae as Kate Hulton Philip Wright as Ian Cross Jayne McKenna as Julia Chamberlain Brian Duffy as Andrew Yvonne O'Grady as Mary Stuart Laing as Martin Cross Simon Snashall as Graham Phil Cheadle as Conrad Devenish Patrick Driver as Alec Smithson Matthew David McCarthy as CID Officer Sian Breckin as DC Gabby Lawson Adam Wilson as Craig Cross Robin Berry as Mark Martin Campbell as Alain Gontrard Leemore Marrett Jr. as DC Howard Stent Max Wrottesley as Adrian