BBC Four HD Saturday

The historian examines Agatha's mysterious disappearance in December 1926 and reveals the influence this episode had on her writing

Part one of two. When a handful of grain is found in the pocket of a financier killed with poison, the sleuth seeks a murderer with a penchant for nursery rhymes

Part two of two. The connection with the nursery rhyme is all too clear to Miss Marple, as is who the next victim will be, so she sets off at once for Yew Tree Lodge

Two lonely souls searching for love meet by chance in a karaoke bar in Helsinki. Aki Kaurismäki's romantic comedy, starring Alma Pöysti and Jussi Vatanen

Helen Mirren discusses acclaimed comedy Calendar Girls and her long-running Prime Suspect dramas, while Jo Brand and Cilla Black also drop in for a chat. With music by Annie Lennox

Barbara and Tom's early morning activities disturb Margo and Jerry. Comedy, with Richard Briers and Felicity Kendal

Cabinet reshuffle rumours and possible redundancy from high office anger Jim Hacker, who considers accepting an offer to become an EEC commissioner

Part one of two. When a handful of grain is found in the pocket of a financier killed with poison, the sleuth seeks a murderer with a penchant for nursery rhymes

Part two of two. The connection with the nursery rhyme is all too clear to Miss Marple, as is who the next victim will be, so she sets off at once for Yew Tree Lodge

The historian examines Agatha's mysterious disappearance in December 1926 and reveals the influence this episode had on her writing