| Episode 18 | 
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| 1 | 2 | 3 | 4 | 5 | 
| John Gregson | Alexander Davion | David Collings | Fanny Rowe | Gillian Lewis | 
| Commander George Gideon | Detective Chief Inspector David Keen | Alan Campbell-Gore | Lady Campbell-Gore | Marjorie Hayling | 
| 6 | 7 | 8 | 9 | 10 | 
| Rosemarie Dunham | Thomas Heathcote | Daphne Anderson | Richard James | Andrea Allan | 
| Sophie Murdoch | Detective Chief Superintendent Charles Appleby | Kate Gideon | Matthew Gideon | Pru Gideon | 
| 11 | 12 | 13 | 14 | 15 | 
| Richard Burrell | Peter Jesson | Caron Gardner | Gillian French | Reginald Jessup | 
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| Detective Sergeant Doug Brown | Jack | Muriel | Jennifer Lewis | Detective Superintendent Lemaitre | 
| 16 | 17 | 18 | 19 | 20 | 
| Arthur Pentelow | John Barrett | Michael Segal | Ray Smith | Jack Armstrong | 
| Mr Lewis | Publican | Pub Patron | Mr Simpson | Pub Patron | 
| 21 | 22 | 23 | 24 | 25 | 
| Roy Everson | Max Latimer | William Dexter | Colin Rix | Bunny Seaman | 
| Pub Patron | Police Driver | Detective Preston | Police Radio Man | Pub Patron | 
| 26 | 27 | 28 | 29 | 30 | 
| Eric Henderson | David Rose | Alex North | Arthur Goodman | Anthony Sheppard | 
| Neighbour | Boyfriend | Bus Conductor | Man in Street | Policeman | 
| 31 | 32 | 33 | 34 | 35 | 
| Mickey Varey | Peggy Scott Sanders | Mona Bruce | Barbara Bennett | Sheila Kennedy | 
| Driver | Neighbour | Woman on Phone | Neighbour | Victim | 
| 36 | 37 | 38 | 39 | 
| Unknown Female 26 | Unknown Male 51 | Unknown Male 340 | Unknown Male 342 | 
| Woman in Street | Pub Patron | Policeman | Policeman |