What she saw - Mark Roberts

Peckham, south London. A nine-year-old boy crawls from a burning car and is left fighting for his life. As DCI David Rosen and his team scour the scene of the crime, a graffiti image of a sinister eye is discovered above the site of the wreckage - and with it, a series of mysterious markings etched onto the wall. Could this be a code to catch the killer?
When a teenager is burned alive, evidence on his body confirms Rosen's suspicion that a cult is at work on the estate. Young children go missing in the dead of night. Each second counts as Rosen battles to find the killers and save the missing souls...