​Aristotle is a Temporal Private Investigator. His normal jobs tend to be investigating cheating spouses by travelling back in time to catch them in flagrante delicate. A messy job but someone has to do it.

He's in the British Library, researching background information for a new case, when the text and images on the page he's reading disappear before his very eyes. Members of Project Clockwise, the team that discovered time travel are being wiped from existence.

Can Aristotle stop the erasures and save time travel and his job?