Radio pick of the day

Karen starts work with a hangover, swilling coffee and guzzling painkillers. She can't remember much about the night before. She is not a journalist, ho ho, but an odd mix of genealogist and private investigator. Her customers are people like Patrick, who's afraid there's a skeleton in the family cupboard because his father has tried to burn all his papers. Now only scraps remain, and Patrick needs help to make sense of them.

What will Karen find out, and will Patrick's ignorance turn out to have been bliss? Find out in Look Sharp (2.15pm, Radio 4). Cath Staincliffe's play stars Suranne Jones and Jeff Hordley.

Or you could make the pilgrimage to Glastonbury. Radio 1's festival coverage kicks off with Jo Whiley (10am), who'll be previewing some of the acts scheduled for the Pyramid and John Peel stages, and continues into the wee small hours with Essential Mix (3am), which includes DJ sets from James Zabiela and Booka Shade in the Dance Village. Over on 6 Music, meanwhile, Steve Lamacq (4pm) is joined by Katie White of the Ting Tings, and hot newcomers the Brute Chorus.