Complete story — includes the ending
A pregnant woman is murdered in a car park, Devlin and Brooks believe it to be a crime of passion and suspect her ex-boyfriend. When the ex-boyfriend's alibi is confirmed they look to Joe Nash, the current boyfriend, who says he was with his psychiatric social worker, whom he sees for a severe sleeping disorder. Based on Joe's behaviour, Brooks believes him to be an ex-con who is hiding something. When Joe is arrested, he admits that his real name is Billy Wells and that his new identity was arranged by the Home Office because he is on a life licence for the murder of his teacher when he was eleven years old. When he recants the admission to being Billy Wells, attempts to verify his identity expose a conspiracy that involves high ranking government officials, including the Director of Public Prosecutions and the Home Secretary.
Sources and content license
Source and revision history · Adapted from Wikipedia contributors, Law & Order: UK series 4. HTML formatting and reference markers removed. · Content license