Dramatised documentary which describes the police investigation that led to the conviction of David Mulcahy for the notorious Railway Murders in the 1980s of three young women in the London area and for the rapes of many others. This investigation was based largely on the testimony of John Duffy to a psychologist in prison where he was serving life after being convicted of the same offences ten years earlier, having denied at the time of his trial that he had had an accomplice (Mulcahy). -Anonymous
| Actor | Role |
|---|---|
 Lindsay DuncanNarrator | Narrator |
| SSteve ChaplinDavid mulcahy (teen) | David mulcahy (teen) |
| TTat WhalleyJohn duffy (teen) | John duffy (teen) |
 Huw HigginsonDavid mulcahey | David mulcahey |
| NNicholas marchieJohn duffy | John duffy |
 Mark SpaldingDet Supt Andy Murphy | Det Supt Andy Murphy |
| NNick BurnellDI Mark Freeman | DI Mark Freeman |
| CCaroline WoodruffDC Caroline Murphy | DC Caroline Murphy |
| JJoanna monroJenny Cutler,Psychologist | Jenny Cutler,Psychologist |
| SStephen GurneyDC Larry Larmour | DC Larry Larmour |
 Robert SwannDet Supt Les Bolland | Det Supt Les Bolland |
 Sarah FarooquiAlison Day | Alison Day |
| CClaire kentMaartje tamboezer | Maartje tamboezer |
| LLeah FletcherAnn lock | Ann lock |
| JJoanna KirklandStella Arnold | Stella Arnold |
| JJayne DobsonTina Clark | Tina Clark |
| EEmma DonoghuePamela Taylor | Pamela Taylor |