When an ex-convict is brutally murdered, the Lyell team is introduced to a forensic psychologist who works closely with those released from prison on life licence. Show more
After the team discovers that suspect Paul may not be who he says he is, the investigation revisits an infamous murder case from the past which he was involved in. Show more
The search for Clara brings the Doctor to London, 2013, where something deadly is waiting in the Wi-Fi.