who starred in the movie mercy
First Look: Colin Firth Cast Adrift as Ill-Fated Amateur Sailor Donald Crowhurst in 'The Mercy'. The high-profile StudioCanal/BBC Films project, directed by James Marsh and also starring Rachel Weisz, had previously been known as the 'Untitled Donald Crowhurst Film.'. For the past year, the Untitled Donald Crowhurst Film has been among the buzziest titles in international markets.