A killer couple who murdered the wife's parents and buried them in their back garden are described as 'still very much in love' despite serving live sentences - according to the screenwriter of a new four-part drama about their exploits.
Christopher and Susan Edwards, both now 63, killed William and Patricia Wycherley at their home in Mansfield, Nottinghamshire, in May 1998.
They spent 15 years living off the Wycherleys' pensions and the proceeds of their house sale, telling relatives the elderly pair had gone to Ireland before the grisly affair came to light.
Now, the story has been recreated in new Sky drama Landscapers, written by Ed Sinclair, husband of actress Olivia Colman - who plays Susan, while Harry Potter star David Thewlis plays the role of Christopher.
Sinclair researched the couple's story extensively and revealed they 'are still very much in love, as far as you can be when you're in two different prisons,' the Sunday Express reports.
Sky Original drama Landscapers, starring David Thewlis and Olivia Colman, tells a unique love story about a seemingly ordinary couple who become the focus of an extraordinary investigation
Christopher Edwards and wife Susan were found guilty of murdering her parents following a trial at Nottingham Crown Court in June 2014
The dark comedy-drama features fantasy sequences, including wild west shootouts based on Mrs Edwards' love of comboy movies and the couple's collection of film memorabilia, which included an autograph of Gary Cooper purchased for nearly £3,000.
Sinclair said: 'The revelation that Susan had been sexually assaulted by her father, which was not well-reported, seemed to explain the whole thing.
'It may have been this trauma that caused her to have less of a grip on reality. It seemed incredibly evident to me that Susan and Christopher loved each other very much.
'They are still together and still very much in love, as far as you can be when you're in two different prisons for 25 years.'
The bodies of Mr and Mrs Wycherley were discovered wrapped in bedding in a makeshift grave in their back garden in October 2013 - over 15 years after they were murdered
The only two phtotographs police found of Mr Wycherley after discovery of the bodies. Photos of his wife Patricia have not been seen in public since. The couple were twice shot with a WWII revolver and buried in the garden of their Mansfield home in Nottinghamshire.
Olivia Colman said: 'I'm very grateful that Ed asked me to do the project. I was able to keep a distance [from the material]. I'm not at all a method actor.'
David Thewlis added: 'I approached the whole thing by forgetting about the crime and just looking at their relationship.
'Thinking about how stressful it was to live their life but not actually thinking about what they'd done. Not for a long time.
'We didn't really know about the real people at all.We never met them and we
