Thanks to the Hong Kong Police Force and especially to the commissioner KS Tang and the members of the OCTB for being so helpful. I am lucky enough to have many clever people in my family, so thanks to Peter and Clare and Charlotte and Dave for answering all things medical. Thanks to Ian Hemmings too. Big thanks to my friend and agent Darley and all his angels; their support is vital to me. Thanks to all the team at Avon and especially to my editor Kate Bradley. Finally, and most importantly, thank you to all long suffering friends and family who keep me sane.