Guest Stars Daisy Head as Amy Stevenson Kieran O'Brien as Andy Stevenson Polly Walker as DI Baker Joel Morris as DS Houghton Bradley Johnson as Noah Stevenson Tom Brittney as Tyler Mitchell Kathleen McDermott as Laura Terny Rob Kendrick as Nick Harrison Ian Hanmore as John Kempt Elaine C Smith as Valerie Hardcastle Susan McArdle as Wendy Andrew Dickens as Waiter Mark Morrell as Chemist Peter Sissons as Himself Peter Toon as Lake Workman