CBS Sherlock Holmes series Elementary has cast Roger Rees in a guest role.
The Welsh actor will play a pivotal figure from Holmes's past, Entertainment Weekly reports.
Rees is currently only signed for a single appearance but his character may recur later in the first season of the Conan Doyle adaptation, which stars Jonny Lee Miller as Holmes and Lucy Liu as his partner Joan Watson.
Elementary exec Robert Doherty previously hinted that the show is "likely" to introduce the detective's estranged father.
The 68-year-old Rees is known for playing Lord John Marbury on The West Wing and for his role as Robin Colcord on sitcom Cheers. He also recently played a recurring role on Syfy's Warehouse 13.
Elementary premieres on Thursday, September 27 on CBS. In the UK, Sky Living will air the drama.
What to Read Next
> Sherlock star Benedict Cumberbatch denies criticising Elementary
> Elementary adds Newsroom star David Harbour
Watch a promo for Elementary below:
![hollywood, california july 08 hubert point du jour attends the pre screening reception for the premiere of peacocks new series dr death at neuehouse los angeles on july 08, 2021 in hollywood, california photo by matt winkelmeyergetty images](https://hips.hearstapps.com/hmg-prod/images/gettyimages-1327739589.jpg?crop=0.570xw:0.820xh;0.168xw,0.0468xh&resize=360:* "Peacock's New Series "Dr. Death" Los Angeles Premiere - Arrivals")
