The Ambrose Parry novels are as much about medical discovery as the pursuit of wrongdoers, and are a triumph on both counts. Brilliantly conceived, fiendishly plotted and immaculately realised, these thrillers pull off the most difficult double-whammy of all: beneath blood and butchery so real they almost stain the pages lie both heart and soul. Two books in, Sarah and Will's story feels like it's just beginning. Wherever Parry takes them, I'll follow