- Himesh Patel - Dr. Watson
- Hannah Dodd - Sarah Chapman / Cicely
- Abbie Hern - Mae
- Róisín Monaghan - Hilda Lyons
- Catriona Chandler - Agatha Gowerdale
- David Westhead - Henry Lyon
- Tim McMullan - Charles McIntyre
- Lee Boardman - Mr. Bill Crouch
- Serrana Su-Ling Bliss - Bessie Chapman
- Alan Mitchell - Powdered Face Man
- Lenny Rush - Newspaper Boy
- Christopher Saul - Client
- Brahmdeo Shannon Ramana - Client
- Clive Ward - Client
- Elizabeth Hill - Client
- Nick Raggett - Client
- Mark Fleischmann - Stage Manager
- Nia Gandhi - Doris
- Hannah Bodenham - Ballroom Dancer
- Miekaile Browne - Ballroom Dancer
- Ramzan Miah - Ballroom Dancer
- Vanessa Vince-Pang - Ballroom Dancer
- Madeleine Waters - Ballroom Dancer
- Cormac Browne - Ballroom Musician
- Sarah Hayward
- Harry Bradbeer
- Jack Thorne
- Alex Garcia
- Millie Bobby Brown
- Andreya Lynham
- Mary Parent
- Daniel Pemberton
- Ben Smithers
- Peter Afterman
Capítulo disponible en las siguientes plataformas:
