A series of crises on Mitch and Cam's wedding day put Pepper to the test. Meanwhile, Phil gets an eye procedure before the celebration, and Claire embraces the role of best woman.
The BAU head to Miami to investigate a serial killer with a seemingly conflicted sexual identity. JJ reconnects with a former colleague and a secret is revealed.
After a street artist's mural is stolen, the investigation soon leads the team to a conspiracy involving a Navy contractor and ocean mammals.
Cooper is asked to testify when a woman on death row petitions for a mistrial; Beth is put in charge of analysis.
Ray turns to Volcheck for help in taking down Cochran, while at home, Bridget argues with her parents about Marvin.