| The world of John Strange is no ordinary place - full of malevolent demons that must be stopped from wreaking havoc upon the Earth. In his quest he is joined by nurse Jude Atkins, computer whiz Toby and Kevin, a man who can pick up on strange vibes. But the mysterious Canon Black remains a thorn in John's side, fervent in his efforts to prove the non-existence of anything remotely demonic or paranormal... |
| Name | Character | Episodes |
|---|---|---|
| Richard Coyle | 6 | |
| Andrew-Lee Potts | 6 | |
| Ian Richardson | 6 | |
| Samantha Womack | 6 | |
| Samuel Barnett | 6 | |
| Ralph Ineson | 1 | |
| Imelda Staunton | 1 | |
| Ian McNeice | 1 | |
| Sean Harris | 1 | |
| Alastair Mackenzie | 1 | |
| Anna Massey | 1 | |
| Ellen Thomas | 1 | |
| Tom Baker | 1 | |
| Eileen Essell | 1 | |
| Colin McFarlane | 1 | |
| Jim Carter | 1 | |
| Sarah Flind | 1 | |
| Ciarán McMenamin | 1 | |
| Peter Sullivan | 1 | |
| Seeta Indrani | 1 | |
| Adam Paul Harvey | Matthew | 1 |
| Ania Sowinski | 1 | |
| Alex Kelly | 1 | |
| Fiona Bruce | 1 | |
| Jenny Howe | 1 | |
| Ana Sofrenović | 1 | |
| Femi Ogunbanjo | Robert | 1 |
| Amanda Walker | Mrs. Fortune | 1 |