David Tennant is set to join the cast of the American comedy series Only Murders in the Building, according to multiple reports. The show follows a murder mystery unfolding in a high-end apartment building in New York. Outlets describe the series as featuring a star-studded ensemble and highlight Tennant’s addition as part of the program’s latest casting updates. The Belfast Telegraph report states that Tennant joins the cast, while the Daily Record similarly reports the casting news and reiterates the premise of a mystery centered on a resident’s death. The Mirror also reports Tennant’s involvement and places it alongside other casting references, noting that fellow Doctor Who actors are among the performers associated with the series. Across the sources, the details that remain consistent are Tennant’s casting and the series’ ongoing focus on a murder mystery in an upscale New York apartment block. The reports do not specify character names or production timelines in the provided excerpts.