Only Murders in the Building has drawn attention for the scale of its guest-star casting ahead of Season 6, with critics questioning whether the strategy is straying too far from the show's original formula. The Hulu murder-mystery comedy, led by Steve Martin, Martin Short and Selena Gomez, has steadily expanded its roster of high-profile cameos each season, and the latest wave has raised concerns that the sheer volume of famous faces could overshadow the central trio's chemistry, which has always been the show's core appeal.

So far, 22 guest stars have been confirmed for Season 6, including Olivia Colman, Nicola Coughlan, David Tennant, Sharon Horgan, Martin Freeman and Geri Halliwell. This follows a pattern of escalating stunt casting across the series' run, from Meryl Streep in Season 3 to names such as Eugene Levy, Eva Longoria and Melissa McCarthy in Season 4, and Christoph Waltz and Renée Zellweger in Season 5, which aired the previous autumn.