Jimmy Savile was one of the United Kingdom’s most beloved TV personalities. Shortly after his death in 2011, an investigation prompted more than 450 horrific allegations of sexual assault and abuse, with victims as young as 5.

Scrabble is experiencing a renaissance. The younger generation have rediscovered the game online - through the copyright busting Scrabulous - and they're having night after night on the tiles. Alan Yentob sets out to discover why the word game leaves us spellbound, tracing its surprising history, meeting the American tournament Word Freaks, and paying a visit to the SAS-style training camp that the Nigerian government trains their players at.