| Jessica Raine ... Lucy Chambers |
| Peter Capaldi ... Gideon Shepherd |
| Nikesh Patel ... Detective Inspector Ravi Dhillon |
| Alex Ferns ... Detective Sergeant Nick Holness |
| Meera Syal ... Doctor Ruby Bennett |
| Saffron Hocking ... Sam Boyd |
| Barbara Marten ... Sylvia Chambers |
| Amanda Lawrence ... Evelyn Wiseman |
| Benjamin Chivers ... Isaac Chambers |
| Thomas Dominique ... Lee Warren |
| Rhiannon Harper-Rafferty ... Debbie Warren |
| James Fleet ... Greg Wiseman |
