Martina Cole is the bestselling author of 14 novels set in London’s gangland. The hardback edition of ‘Hard Girls’ went straight to No 1 on The Sunday Times bestseller list and the release of the paperback has been much anticipated.

The iPhone App was built as an interactive crime scene. Scroll around the scene to discover a Martina Cole biography, portrait photo and video interview, as well as navigating into 16 beautifully animated samples of bestsellers. After reading sample chapters, users have the option to purchase the full title via Amazon.