Guest Stars Mark Gatiss as Frank Lydia West as Lucy Sarah Niles as Meg Matthew Beard as Jack Phil Dunster as Quincey Lyndsey Marshal as Bloxham Chanel Cresswell as Kathleen Sofia Oxenham as Sam Olivia Talbot as Emily Corinna Wilson as Amanda Anthony Kaye as Andy Anna Swan as Andrea Cat White as Beth Kiran Shah as Little Boy Polly Kemp as Nurse Millicent Wong as Alice Paul Brennen as Commander Irving John McCrea as Zev