Nicola Coughlan has joined the cast of the upcoming sixth season of Only Murders in the Building.The Derry Girls actor will be stepping into the Disney+ series alongside David Tennant, Jodie Whittaker, Jim Broadbent, Richard Ayoade, Adrian Lukis and Kathryn Hunter.The casting announcement was made by the show’s official account and Disney+, which shared on social media, “keep calm and update the case file”, alongside the actors’ names and photos.Coughlan is best known for her roles as Clare Devlin in Derry Girls and Penelope Featherington in Bridgerton, and most recently starred in a stage adaptation of The Playboy of the Western World in London alongside fellow Irish actors Éanna Hardwicke and Siobhán McSweeney.Also joining the murder mystery cast is Tennant, who is best known for playing the 10th Doctor in Doctor Who from 2005 until 2010, returning as the 14th Doctor in 2023. His other notable screen roles have included Barty Crouch jnr in Harry Potter and the Goblet of Fire; Detective Inspector Alec Hardy in Broadchurch; Crowley in Good Omens; and Lord Tony Baddingham in Rivals. He is being enlisted alongside fellow, former Doctor Who and Broadchurch star, Whittaker.Only Murders in the Building follows a crime-solving trio, played by Steve Martin, Martin Short and Selena Gomez, who have a podcast about murders committed in their swanky New York City apartment building.Throughout its previous five seasons, the series has received 49 Emmy nominations, winning seven.The upcoming season of the US crime comedy, which will be set in London for the first time, will also feature Jamie Demetriou, Jane Horrocks, Anjana Vasan, Derek Jacobi and Lesley Nicol.[ Big Mood on Channel 4: Nicola Coughlan shines in a show that would have worked better as a one-and-doneOpens in new window ]Last week, it was announced that Spice Girl Geri Halliwell-Horner and Emmy-winning actor Martin Freeman had also signed up for the show.The last season featured Oscar-winning actors Meryl Streep and Da’Vine Joy Randolph, Inside Out star Richard Kind and Emmy-winner Nathan Lane.It has also previously featured Paul Rudd, Shirley MacLaine, Tina Fey and Renee Zellweger.Season six will stream on Disney Plus internationally. -PA