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Cast for season 15, episode 16 "On Air"

Conway has been asked to take part in a radio phone-in show, and Holmes uses the opportunity to plea for information regarding a serial offender who has been stalking and attacking women in their own homes - but using a rather unusual MO. When the offender calls up the radio station and goes live on air to Conway, he confesses to a brutal sex assault and Holmes realises that there are more victims than she initially thought. As one of his previous victims goes on air to speak about her experience, the caller comes on the air again, this time at the house of a woman he has attacked and imprisoned. As Conway keeps him talking, Deakin leads the team on a search to find the attacker.

Tommy Boyd and Amanda Abbington guest star.

Season 15 index | <<< S15E15 "Yesterday's Hero" | S15E17 "To Catch a Cobra" >>>