Guest Stars Louise Brealey as Cass Penny Downie as Ellen Jessica Gunning as Jan Geoffrey McGivern as Uncle Geoff 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
