Hoffmann’s heart was pumping so fast he could hear the rush of his own pulse. His immediate thought was Gabrielle: he must get her out of the house while the intruder was preoccupied in the kitchen. Get her out of the house, or at the very least get her to lock herself in the bathroom until the police arrived.

He still had his mobile in his hand. Without taking his eyes from the intruder, he dialled her number. Seconds later he heard her phone start to ring – too loud and too near for it to be with her upstairs. At once the stranger looked up from his sharpening. Gabrielle’s phone was lying where she had left it before she went to bed, on the big pine table in the kitchen, its screen glowing, its pink plastic case buzzing along the wood like some tropical beetle turned on its back. The intruder cocked his head and looked at it. For several long seconds he stayed where he was. Then, with the same infuriating calmness, he laid down the knife – Hoffmann’s favourite knife, the one with the long thin blade that was particularly useful for boning – and moved around the island towards the table. As he did so, his body half turned towards the window, and Hoffmann got his first proper glimpse of him – a bald pate with long, thin grey hair at the sides pulled back behind the ears into a greasy ponytail, hollow cheeks, unshaven. He was wearing a scuffed brown leather coat. He looked like a traveller, the sort of man who might work in a circus or on a ride in a fair. He stared in puzzlement at the phone as if he had never seen one before, picked it up, hesitated, then pressed answer and held it to his ear.

Hoffmann was convulsed by a wave of murderous anger. It flooded him like a light. He said quietly, ‘You cocksucker, get out of my house,’ and was gratified to see the intruder jerk in alarm, as if tugged from above by an invisible wire. He rapidly twisted his head – left, right, left, right – and then his gaze settled on the window. For an instant his darting eyes met Hoffmann’s, but blindly, for he was staring into dark glass. It would have been hard to say who was the more frightened. Suddenly he threw the phone on to the table and with surprising agility darted for the door.