Sleep Baby Sleep is the fourth title in the Amsterdam detective series featuring Brigadier Pieter Vos. Vivid characters, great sense of place and atmosphere showcasing what this author does best: taking his reader to a European city and letting them breathe in the vibe in his wonderful descriptions of, in this case, Amsterdam life. With wonderfully colourful scenes from the flower market to the cemetery, the reader is taken on a sinister journey of a serial killer on the loose in the city. A killer who leaves the victims with a trademark tattoo - sleep baby sleep.