Guest Stars Jessica Gunning as Jan Louise Brealey as Cass Geoffrey McGivern as Uncle Geoff Penny Downie as Ellen Olivia Poulet as Alison Oliver Maltman as Mike Caius Luckyn-Malone as Young Andrew Sebastian Patterson as Young Stephen Clive Russell as Paul Richard Pepple as DS Howard Madeleine Bowyer as Jo Wayne Cater as Birdwatcher Mark Weinman as Carl Walters Craig Russell as Builder