Harry Potter star Daniel Radcliffe and Mad Men's Jon Hamm are to star in a comedy drama about the Russian revolution on Sky Arts.
The pair will play the same doctor at different stages of his life in the four-part series, A Young Doctor's Notebook, by Russian writer and playwright Mikhail Bulgakov.
Hamm will play the older man, who has a series of "bleakly comic" exchanges with his younger self, played by Radcliffe.
The Mad Men actor described the project as "original, dark, funny and moving" and said he was "thrilled to get the opportunity to work on such rich source material with such fantastically talented people whose work I greatly respect".
A Young Doctor's Notebook will air in Sky Arts' Playhouse Presents strand in 2013. Playhouse Presents has featured projects starring Emma Thompson,