Code of a Killer

Season 1

David Threlfall (Shameless, Midwinter of the Spirit) stars as DCS David Baker, who heads up the investigation into the brutal murders of two Leicestershire schoolgirls during the 1980s. Only a few miles away, Dr Alec Jeffreys, (John Simm, Doctor Who, Life on Mars) a scientist at Leicester University, invents a remarkable technique to read each individual's unique DNA fingerprint.

20153 episodes

13+

Drama·Historical

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Episode number
Newest episodes
Available to watch

S1 E1 - Episode 1
April 5, 2015
45min
13+
When 15-year-old Lynda Mann turns up murdered, DCS David Baker leads the investigation to search for her killer but struggles to find any worthwhile leads in the difficult case. Meanwhile, scientist Alec Jeffreys works tirelessly to make a breakthrough in DNA research.
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S1 E2 - Episode 2
April 5, 2015
46min
13+
The murder of another teenage girl killed in similar circumstances reignites the search for Lynda’s killer. After an arrest and a dubious confession, David approaches Alec and asks for his help on the case.
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S1 E3 - Episode 3
April 12, 2015
43min
13+
Possessing what they believe to be the killer’s genetic “fingerprint,” David and Alec initiate the world’s first “DNA manhunt.” But as thousands of samples are tested and costs continue to rise, David worries the operation will be shut down before they can find the killer.
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