It began with temptation and ended in bloodshed.

The police ask private detective Ronan Mezini to investigate murders in the polyamory community, where "sexperimentation" spills over into violence.

Mezini is afflicted (and in many ways gifted) with synesthesia - condition that makes his senses cross over in complex patterns. His distorted visions are a low-level superpower, providing astonishing insights as he tries to find the killer.