First look at British acting royalty filming tragic real life ITV suicide drama

First look at British acting royalty filming tragic real life ITV suicide drama Filming is underway for a hotly anticipated new ITV drama chronicling the heartbreaking true story of Mavis Eccleston who was accused of murder after a suicide pact with her terminally ill husband, Dennis, failed Filming is officially underway on ITV's gripping new real-life drama Mavis Eccleston - with new pictures showing British acting royalty bringing the devastating true story to life. The series chronicles the heartbreaking aftermath of a failed suicide pact between Mavis Eccleston and terminally-ill husband Dennis, 81, - a tragedy that ultimately saw a devoted wife on trial for murder after she survived. Now new photos capture the cast transforming into their real-life counterparts. Downton Abbey star Dame Penelope Wilton, 80, who is taking on the role of Mavis, can be seen wearing a pink-and-white patterned nightie under a heavy, floral-printed black dressing gown. The costume choices directly reflect the harrowing reality of the case: following the failed pact, the real Mavis Eccleston was arrested at the hospital and held in a police cell for 30 hours wearing nothing but her nightgown, dressing gown, and slippers. Playing Mavis's devoted husband of nearly 60 years is Sir Jonathan Pryce, 79. Filming outside a residential brick house, he can be seen in character, alongside Jill Halfpenny, 50, who will play their couple's daughter. The series follows the trauma endured by Mavis after a suicide pact she made with Dennis, 81, failed. Dennis had been diagnosed with terminal bowel cancer in 2015 and could no longer bear the agony of his illness. When he told his beloved wife that he'd suffered enough, she told him: "If that's the way you are going, then I'm coming too." On February 20, 2018, the couple took 40 sleeping pills and lay down together in their home, holding hands. Mavis' last words to her husband were: "Goodnight, darling," to which he replied, "God Bless". While Dennis tragically passed away, Mavis was resuscitated - only to find herself arrested for murder. After a brutal 18-month legal battle, she was rightfully cleared of all allegations by a jury. "I have no regrets," she previously told the Mirror. "I would do it all again to help my husband escape the terrible pain he was in. It was awful, especially to be accused of murdering the man I had loved for 60 years." Assisted dying is a topic that has been hotly debated throughout the UK, and stories like that of Mavis and Dennis shine a light on the human dilemmas at the centre of the issue. Now the couple's family hope the show will change hearts and minds, in the way that other recent real-life dramas have done. Actor Tom Brittney, best known for playing the vicar in Grantchester, has collaborated on the development of the series after meeting the family and gaining their trust. He said: "When I first read about Mavis and Dennis in 2018, I was struck by the extraordinary love at its heart and the profound injustice their family endured. I felt their story, told with care and humanity, could be a powerful drama and a worthy contribution to a debate that remains urgent and deeply complex." Chris Lang, creator of Unforgotten and The Thief, His Wife And The Canoe, is writing the four-part series for ITV, which will be produced by Corestar Media and Indefinite Films. Chris said: "I knew I had to write the script. Although their story does ask profound questions about how we live and end our lives, for me, their story was always about something simpler and more enduring. "This was always about love. Unconditional love."