A killer is on the loose... Joel is fascinated by the art of Rithmatics
- with its lines of power & ability to bring chalk drawings to life
- but only a few have the gift & he is not one of them. When Rithmatic students from Joel's school start disappearing he is keen to investigate. Since he's not a Rithmatist Joel seems to be safe
- but others are dying. Can he find the killer before the killer realizes just what a threat Joel really is?