Doctor Who Vs. Code of a Killer

This two-part drama from World Productions

centred on the true story of Professor Alex 

Jeffrey's discovery of DNA fingerprinting and 

its first application by Chief Superintendent

 David Baker in catching a double murderer.

Jeffreys (portrayed here by John Simm), a 

pioneering geneticist based at the University 

of Leicester, and DCS Baker (David Threlfall) 

achieved the single biggest leap in criminal investigative history by using the world's

 first mass DNA screening programme, which

 led to the conviction of Colin Pitchfork in 1988.

First screened in April 2015, Code of a Killer

was repeated on ITV last night - it featured

Anna Madeley, and seventeen Doctor Who

cast and crew connections:

• James Strong was also the director of The Impossible Planet, The Satan Pit, Daleks in Manhattan, Evolution of the Daleks, Voyage of the Damned, Partners in Crime and Planet of the Dead
• Big Finish actor Siobhan Redmond (Joy) voiced Talin for Revenge of the Swarm, then the titular renegade for The Rani Elite (both 2014), and Planet of the Rani (2015)
• Paul [Mackriell] Copley (Jeffreys) was Clem McDonald in Torchwood: Children of Earth, and voiced Dad for Spare Parts (2007), and Jimmy Deel for Missing Persons (2013)
• Shirley Dixon (Joan) provided the voice of Skagra's ship for Shada
• Robert Glenister (DCC Chapman) was Salateen in The Caves of Androzani, then played Thomas Edison in Nikola Tesla's Night of Terror
• Andrew Tiernan (DS Taylor) was Mr. Purcell in Night Terrors
• Rakie Ayola (Helena) was the Hostess in Midnight, then voiced Pollia and Countdown for The Lords of Terror (2018), Andrea Davenport for Another Man's Shoes, Andrea for One Mile Down (both 2019), Emma for Red Base (2020), Violet Hardaker for The Blazing Hour (2021), and Dakota Bly for Charlotte Pollard: The Further Adventures (2022)
• Neil Edmond (Ashworth) voiced Boatman, Guard and Blank for Vampire of the Mind, Sarlon, Gorlan and Time Lord for The Two Masters, and Professor Aryan Wyke and Mine Worker for Absolute Power (all 2016)
• Mike Jones was also film editor on twelve episodes (from Rose to Face the Raven)
• Ray Holman was also costume designer on fifty-nine stories (from Blink to Series 13), and Torchwood
• Ian Adrian (2nd Unit DoP) and Sebastian Marczewski (2nd asst. cameraman) both worked on An Adventure in Space and Time, as camera operator and camera trainee respectively
• Ian Fowler was also costume assistant on fourteen episodes (from Into the Dalek to The Husbands of River Song)
• Andrew Mear was costume assistant on The End of the World too
• Simon Marks was also costume supervisor on the whole of Series 9
• Chris Pollard was a stuntman on Robot of Sherwood too
• Tony Lucken was also a stuntman on Dalek, Bad Wolf, The Parting of the Ways and The End of Time