Hornstock is a murder suspect when his third ex-wife is killed, so he turns to Rosewood and Villa to help him clear his name.

Rosewood and Villa dive into the hip Miami art scene to catch a serial killer who is on the cusp of creating a "masterpiece." Meanwhile, an impending lawsuit against Rosewood threatens the lifeline of Magic City Lab, and Rosewood tries to protect Villa from his best friend, Mike.

While at an out-of-town forensic pathology convention, Rosewood unintentionally reveals the blueprint to commit the perfect murder during a speech to the convention attendees. Tormented, and armed only with a hunch, Rosewood enlists Villa to help solve the crime, and while investigating undercover, sparks fly unexpectedly between them. Hornstock and Floyd Butters are called upon for extra help. Meanwhile, Pippy and TMI have locked themselves in the lab overnight to help with the investigation and TMI receives an unexpected visit from her estranged father.

When a patient of Erica Kincaid's dies on the table, Rosewood steps in to help solve what turns out to be the murder of an undercover ATF agent. But when Villa connects with a cold case detective, it turns out this case has more angles than they ever imagined.

Rosie and Villa investigate a man who paid in advance for his own autopsy the day before he turned up dead!

A hostage situation erupts at the East Miami Police Department, and Rosewood, Villa and Slade are trapped on the inside. Rosewood forms a strong bond with their captor and must solve his biggest medical mystery to date in order to keep his team alive.

The hunt for a counterfeit currency kingpin allows the team to get a glimpse into Villa's past. Meanwhile, Rosie receives surprising news about his recent health issue.