In this personal memoir about life at 10 Downing Street, Sarah Brown shares the secrets of living behind the most famous front door in the world.

Sarah gave up a successful career in business to serve the country. A passionate campaigner for women and children, she mobilised over a million people through her early adoption of Twitter.

If you've ever wondered what it's like to pack for a photo call with supermodels or pause a speech in front of hundreds when the autocue fails, it's all here - from what to do when the school play clashes with a visit to the White House to what it feels like to support the man you love as he takes tough decisions to stave off global financial meltdown...

Intimate, reflective, surprising and funny, Behind the Black Door takes us backstage to reveal what it's like to be an ordinary woman, wife and mother in extraordinary circumstances.