| A series of killings of bank managers has London in a turmoil, all the way up to Parliament. And the killer regularly calls about his handiwork, but only to a street-wise, and usually rather tipsy, radio reporter, about to be sacked for his habitual irreverence toward his station and the BBC. And while everything seems to point to a lead singer of a rock group famous for the "In The Red" music which has been connected to the killings, in typical British mystery fashion, there are also other sub-plots to be considered. |
| Name | Character | Episodes |
|---|---|---|
| Steve Pemberton | Lawrence Boot Heath | 3 |
| Richard Griffiths | Geoffrey Crichton Potter | 3 |
| Lee Ingleby | Paul | 3 |
| John Bird | Controller, Radio 4 | 3 |
| Reece Shearsmith | Journalist | 3 |
| Mark Gatiss | Junior Detective | 3 |
| Stephen Fry | Controller, Radio 2 | 3 |
| Richard Wilson | Lord Tone | 3 |
| Rik Mayall | Dominic De'Ath | 3 |
| Warren Clarke | George Cragge | 3 |
| Keith Barron | Jim Wilkes | 3 |
| Rebecca Front | Beth Parsons | 3 |
| Alun Armstrong | DCI Frank Jefferson | 3 |
| Victoria Carling | DS Marten | 3 |
| Sally Phillips | Jemma White | 3 |
| Patrick O'Kane | Andrew James | 3 |
| David Ryall | Max Parker | 3 |
| Siobhan Redmond | Ms Sin | 3 |
| John Sessions | Hercules Fortescue | 3 |
| Rachel Fielding | Laetitia Tone | 3 |
| Alistair McGowan | Murderer's Voice (Voice Only) | 3 |
| Simon Godley | Henry Potts | 3 |
| Tracy-Ann Oberman | Barmaid | 1 |
| Kevin Eldon | 1 | |
| Albert Welling | 1 |