Nathan Maguire is a Guardian of Danu, and he possesses a deadly psychic gift. He also has a checkered past. As a young man, he spent time in prison, where he learned the rudiments of tattooing, a skill he has built into a successful business in Tampa, Florida. He’s content with his life – until a beautiful FBI profiler walks into his shop.

Talia Werner has come to deliver an urgent message from one of the other Guardians. The trouble is no one outside that select group is supposed to know they exist. Nate doesn’t believe Talia and suspects she is up to no-good. Meanwhile, she finds out a woman was brutally murdered not far from Nate’s shop. This is the third such killing in the past two months. A serial killer is loose in Tampa.

Working with the police, Talia discovers all three of the victims bore a blue butterfly tattoo, one of Nate’s designs. Suspicion falls on him but quickly points to other tattoo artists. Enlisting his aid in meeting and interviewing them, Talia develops a growing attraction to the man, who isn’t at all what he seems to be on the surface. Nate returns her feelings and their relationship heats up.

However, the killer is still on the hunt, and he knows Talia is after him. Will the stubborn woman accept Nate’s protection or will she be the murderer’s next victim?