Lars Kepler is a No.1 bestselling international sensation, whose Joona Linna thrillers have sold in excess of 10 million copies in 20 countries.

The first book in the series, The Hypnotist, was selected for the 2012 Richard and Judy Book Club and the most recent, The Sandman, was one of the Evening Standard's books of the year.

This is the sixth novel in the series and went straight to No.1 in Sweden, Norway, Holland, Denmark and Finland. Lars Kepler is the pseudonym for writing duo, Alexander and Alexandra Ahndoril. They live with their family in Sweden.