Bad scores can close doors in life. In this case. It closed a life.

In the middle of a whirlwind lesson, Mimi and Baxter are interrupted by Rob at the door with an evidence bag containing her bloodied antique Irish iron arrowhead – a suspected murder weapon involved in the killing of a snarky professor, Cyrus Frisk. Mimi is stupefied against Rob's demand for an alibi – the antique had been under lock and key.

Someone has violated her privacy. Crossed into her territory and taken something precious from her – to frame her? Things can't get any worse when another knock on her door reveals a woman representing an East Coast group of supernaturals. She warns Mimi of a wizard named Reneus Ulzor and advises her to keep away from him at all costs.

As details of Cyrus's death slowly come to light, from his tempestuous relationships with past pupils to the way he conducted himself with residents – Mimi finds herself torn between defending herself from being a person of interest as well as canvassing around town for clues to track down the real murderer.