ITV's The Dark is the serial killer thriller we've all been waiting for.Hayley Anderson Screen Time TV Reporter09:11, 12 Jul 2026Updated 11:35, 13 Jul 2026The Dark teaser trailer for ITV thrillerThe Dark is almost here and it's enviable cast stars icons from the worlds of Friends, Outlander and Trigger Point.‌Premiering tonight, Sunday, July 12, at 9pm on ITV, The Dark opens with the discovery of a young man's body "eerily staged in the idyllic Scottish wilderness".‌This chilling find sets Detective Monica Kennedy (played by Laura Donnelly) on a gripping investigation, as she fears it could signal the beginning of a "terrifying campaign".‌ITV The Dark cast in fullDetective Monica Kennedy - Laura DonnellyAs Detective Monica Kennedy embarks on this "terrifying" investigation, she is once again forced to confront her inner demons while balancing the demands of motherhood alongside her career.Laura Donnelly is best known for her portrayal of Jenny Fraser Murray across the first three seasons of the beloved romantic drama Outlander.‌Her other notable roles include appearances in HBO's The Nevers, Werewolf by Night, Sugar, Say Nothing and Britannia.DC Connor Crawford - Mark RowleyMonica Kennedy's new partner, DC Connor Crawford, is an open, charming and talkative character — qualities that quickly create friction within their professional relationship.‌He is portrayed by Mark Rowley, who is well known for playing Rich Manning in ITV's Trigger Point, Finan in The Last Kingdom and Mick Prentice Jr in Karen Pirie, among others.Bethany Morgan - Helen BaxendaleFriends devotees will immediately recognise Helen Baxendale as Emily Waltham, the second wife of Ross Gellar (David Schwimmer).‌Baxendale has also appeared in Cold Feet as Rachel Bradley, Cardiac Arrest as Dr Claire Maitland and sitcom Cuckoo as Lorna Thompson.She portrays Bethany Morgan, a distressed mother who is "pushed to her limit after Detective Monica appears on her doorstep once again with a case linked to her missing son".Michael Bach - Tunji Kasim‌Michael Bach is portrayed as a "chronically disorganised children's social worker" who cannot resist getting involved when one of his teenage clients disappears.Bridgerton enthusiasts will recall actor Tunji Kasim as Duke Adolphus, Queen Charlotte's older brother in Netflix's spin-off Queen Charlotte: A Bridgerton Story.His credits also include The Good Liar, Nearly Famous, Nancy Drew and Shetland.‌PC Carol Stewart - Lois ChimimbaAnother officer from the Scottish police force investigating the young man's death is PC Carol Stewart.The character is played by actress Lois Chimimba, who featured in BBC's Vigil, Netflix's The One and ITV drama Coldwater.Article continues belowThe Dark premieres on Sunday, July 12, at 9pm on ITV.