I would like to thank the following people for the time and care they have put into helping this book into its final shape: Sarah Turner, Maria Rejt and Nicholas Blake at Pan-Macmillan; Dan Conaway, Erika Schmid and Jill Schwartzman at William Morrow; and Dinah Forbes at McClelland amp; Stewart. I would also like to thank Michael Morrison, Lisa Gallagher, Sharyn Rosenblum, Angela Tedesco, Dominick Abel, David Grossman, David North, Katie James, Ellen Seligman and Parmjit Parmar for all their ongoing hard work and support.
I also want to thank Commander Philip Gormley, head of S019, the Metropolitan Force Firearms Unit and Detective Inspector Claire Stevens of the Thames Valley Police. As usual, any mistakes are my own and are made entirely in the interests of the story.
I also owe a debt of thanks to the music of Richard Thompson and to Victor Malarek for his book, The natashas.