S J Watson is a British author best known for his debut novel Before I Go To Sleep. The psychological thriller was an international bestseller, selling over two million copies worldwide and being translated into over 40 languages. It was adapted into a feature film starring Nicole Kidman and Colin Firth. Watson's second novel, Second Life, was published in 2014 and was also a bestseller. He has also written for television and film, and is currently working on his third novel. Watson is a passionate advocate for mental health awareness and has spoken publicly about his own struggles with depression.