Vampires are back on the streets of London in Lee Markham’s visceral debut The Truants. Just when you thought the vampire mythology could not take another go round, Markham takes this corner of the horror genre and gives is a shake. His stated aim is to create some discomfort for readers and he succeeds.  On a bench facing east the old one waits to die. A long-lived vampire, the old one has decided to end his life by facing the sun. But before he can complete the ritual he is attacked by a street kid after money. The kid stabs him and then escapes with a broken arm but the damage has been done. The knife that is carried away is somehow infused with the spirit of the dying vampire and every person it touches absorbs that spirit. The first two of these are a two year old boy and a ten year old school boy. From there all hell, literally, breaks out.  Markham has crafted a vampire tale for modern times. His vampires are dispossessed of the streets and the tower blocks of London. The baby that the old one possesses early on is living in squalor in a drug dealer’s squat so that it is almost a relief when he is given some agency even with…