When an ex-convict is found brutally murdered in his home, the Lyell team is introduced to Sasha Blackburn, a forensic psychologist who works closely with those released from prison on life licence. The victim was a client of Sasha's, and so is one of the suspects: Paul Raynott, a vulnerable young man trying to turn his life around with Sasha's help.

Several other members of the life licence community are drawn into the investigation, each at varying stages of rehabilitation having served time for murder. Whilst the team learn how fragile their freedom really is, Sasha's close relationship with these damaged men is called into question, as is whether she really knows what's best for them. There are concerns over Paul's safety in particular, whose fragile state of mind and desperate need for rehabilitation mean he may be just as much a danger to himself as others. Show less