| Person | Type | Job | Role(s) | Episodes |
|---|---|---|---|---|
 Geoffrey Sax | Crew | Directing | Director | 2 |
 Jill Robertson | Crew | Creator | Creator | |
 Roger Goldby | Crew | Directing | Director | 2 |
 Bertie Carvel | Crew | Directing | Director | 2 |
 Helen Edmundson | Crew | Writing | Writer | 8 |
Stephen Greenhorn | Crew | Writing | Writer | 2 |
 P. D. James | Crew | Writing | Book | 6 |
Ryan Tohill | Crew | Directing | Director | 2 |
Georgie Fallon | Crew | Production | Producer | 4 |
Lisa Clarke | Crew | Directing | Director | 2 |
Colette Kane | Crew | Writing | Writer | 2 |
Kam Odedra | Crew | Writing | Writer | 2 |
 Amanda Root | Cast | Actress | Sister Brumfett | 2 |
 Avin Shah | Cast | Rohan Chopra | 2 | |
 Brid Brennan | Cast | Actress | Mrs. Dettinger | 1 |
 David Pearse | Cast | Actor | Miles Kynaston | 1 |
 Fenella Woolgar | Cast | Actress | Sister Gearing | 2 |
 James Cartwright | Cast | Actor | Stephen Lampart | 2 |
 Jane Lapotaire | Cast | Actress | Lady Lavinia | 2 |
Jenny Howe | Cast | Actress | Grace | 2 |
 Jim Norton | Cast | Actor | Father Barnes | 2 |
 Natasha Little | Cast | Actress | Matron Mary Taylor | 2 |
 Richard Dillane | Cast | Actor | Stephen Courtney-Briggs | 2 |
 Siobhán Cullen | Cast | Actress | Josephine Fallon | 2 |
 Steven Mackintosh | Cast | Actor | Wilfred Antsey | 2 |
 Tilly Vosburgh | Cast | Actress | Miss Wharton | 1 |
 Barry Aird | Cast | Actor | DI Daniel | 2 |
Bertie Carvel | Cast | Actor | Adam Dalgliesh | 12 |
 Jonjo O'Neill | Cast | Actor | Julius Marsh | 2 |
 Patrick Regis | Cast | Actor | Gordon Halliwell | 2 |
 John Hollingworth | Cast | Actor | Eric Hewson | 2 |
 Laura Elphinstone | Cast | Actress | Miss Matlock | 2 |
 Paul Mallon | Cast | Dennis | 2 | |
 Alistair Brammer | Cast | Actor | DS Daniel Tarrant | 4 |
 Jeremy Irvine | Cast | Actor | Charles Masterson | 4 |
 Fra Fee | Cast | Actor | Dominic Swayne | 2 |
 Kieran O'Reilly | Cast | Henry Yates | 1 | |
 Lily Newmark | Cast | Actress | Morag Smith | 2 |
 Storme Toolis | Cast | Actress | Jennie | 2 |
 Julia Dearden | Cast | Actress | Mrs Hurrell | 1 |
 Shannon Murray | Cast | Actress | Ursula | 2 |
 Alice Nokes | Cast | Actress | Julia Pardoe | 2 |
Laura Hughes | Cast | Actress | Librarian | 1 |
 Carlyss Peer | Cast | Kate Miskin | 4 | |
 Tony Flynn | Cast | Actor | Pathologist | 1 |
 George Robinson | Cast | Actor | Henry | 2 |
 Lily Sacofsky | Cast | Actress | Barbara Berowne | 2 |
 Beccy Henderson | Cast | Heather Pearce | 1 | |
 Sally Scott | Cast | Helen Rainer | 2 | |
 Eliot Salt | Cast | Actress | Madeline Goodale | 2 |
Syd Ralph | Cast | Miss Collins | 1 | |
 Mirren Mack | Cast | Actress | Maggie Hewson | 2 |
Darren Swift | Cast | Victor | 1 | |
Sami Amber | Cast | Actor | Darren | 2 |
 Alex Kristoffy | Cast | Maureen Burt | 2 | |
 Robin Kristoffy | Cast | Shirley Burt | 2 | |
 Helen Aluko | Cast | Christine Dakers | 2 | |
 Maeve Smyth | Cast | Actress | Theresa Nolan | 2 |
| Person | Type | Job | Role(s) | Episodes |
