1Only Connect, Part One
DS Sean Stone's manner alienates all those who work with him, but his unorthodox methods could hold the key to finding a missing girl.
2Only Connect, Part Two
The search for Taylor Davis takes an unexpected turn. Sean is forced to question his methods - and faces a shocking surprise.
3Off Radar, Part One
Sean is convinced he has found the third victim of convicted killer Leonard Vance. He gets a confession but Vance is unable to locate the body.
4Off Radar, Part Two
Sean uncovers inconsistencies in Vance's confession and realises that Vance is just another victim - the real killer is still on the loose.