7/8 Tully is rather taken with a new informant who might help them catch Steve Mason.
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Stark drama based on the notorious case of north London serial killer John Christie.
8/8 The sad death of three teenagers is soon overshadowed when an escaped prisoner strikes.
Christine becomes embroiled in a case involving a criminal who threatens witnesses. (R)
1/8 When three murders are linked to 'Alex', the debonair sleuth investigates.