June 15 (UPI) -- Good Omens actor David Tennant and Bridgerton actress Nicola Coughlan are joining the cast of Only Murders in the Building . Tennant, 55, and Coughlan, 39, will appear in Season 6 of the Hulu comedy-drama series starring Steve Martin , Martin Short and Selena Gomez . Killing Eve actress Jodie Whittaker , Harry Potter actors Jim Broadbent and Kathryn Hunter, and The IT Crowd actor Richard Ayoade will also join the show. Simone Ashley, Sharon Horgan, Jennifer Saunders, Sean Teale,