When disaster strikes at a school for troubled teens, a desperate father turns to private security officer Ryan Lock for help.

Ex-military bodyguard Ryan Lock is back in the latest novel from the master of the modern thriller, Sean Black.

Praise for Sean Black's Ryan Lock series:

"This series is ace. There are deservedly strong Lee Child comparisons as the author is also a Brit, his novels US-based, his character appealing, and his publisher the same." - Sarah Broadhurst, The Bookseller

"Black's style is supremely slick." - Jeremy Jehu, The Daily Telegraph

"The pace of Lee Child, and the heart of Harlan Coben." - Joseph Finder, New York Times Bestseller (Paranoia, Buried Secrets)

"The heir apparent to Lee Child" - Ken Bruen

'Ryan Lock (is) a protagonist tough enough to take on the Jacks of this world (that's Bauer and Reacher)' - Russel McLean

Read what others are saying about Sean Black: "This series is ace. There are deservedly strong Lee Child comparisons as the author is also a Brit, his novels US-based, his character appealing, and his publisher the same." - Sarah Broadhurst, The Bookseller

"This is a writer, and a hero, to watch." - Geoffrey Wansell, The Daily Mail

"Black's style is supremely slick." - Jeremy Jehu, The Daily Telegraph

"The pace of Lee Child, and the heart of Harlan Coben." - Joseph Finder, New York Times Bestseller (Paranoia, Buried Secrets)

"The heir apparent to Lee Child" - Ken Bruen, Internationally Bestselling Author of The Guards

'Ryan Lock (is) a protagonist tough enough to take on the Jacks of this world (that's Bauer and Reacher)' - Russel McLean

'Black's star just keeps on rising.' - Evening Telegraph

Other readers of Sean Black's books enjoyed books by: Marc Cameron, Jack Mars, Vince Flynn, Brad Thor, James Patterson, Mark Dawson, Lee Child, Nelson DeMille, Meg Gardiner, David Baldacci, John Sandford, Harlan Coben, Robert Crais, Mark Greaney, Gregg Hurwitz, Simon Kernick, Joseph Finder, David Antoci, Robert Swartwood, Bob Mayer, John Gilstrap, Tom Clancy, Leo J. Maloney, Wilbur Smith, Will Jordan, Stephen Leather, Chris Ryan, Ben Coes, Andrew Gross, Maxine Paetro, Chris Carter and anyone who enjoys an action-packed crime thriller.