The bestselling author of Elizabeth is Missing is back with a brand new chilling thriller called Sweat. Set around gyms and exercise, the book features a woman who gets the opportunity to exact revenge on a controlling ex-boyfriend. But will she get away with it and at what cost..?

It's a deeply personal book for Emma. She talks openly about obsessive fasting and over exercising after pregnancy and how both these things influenced this novel.

There's also plenty of laughs and no amount of persuasion is ever getting Natalie into the gym!