S J Watson's first novel Before I Go To Sleep was an international hit - it's been published in over 40 languages and adapted into a Hollywood movie. He talks to Mariella about writing the follow up, his new thriller Second Life. And about the impact that seeing his debut made into a film has had on his writing.

Also on the programme Ann Morgan discusses her quest to read a book from every country in the world in just one year, and Turkish novelist Elif Shafak reveals the book she'd never lend.

And with Valentine's Day approaching writer Rebecca Stott considers some literary declarations of love - from women. Show less