Detective Kevin Ryan is getting married to the love of his life—Jenny. Castle’s plus-one for the wedding just happens to be the love of his life—Alexis. Beckett will be flying solo on the big day. Esposito is going dateless, too. He’s looking forward to hooking up with one of Jenny’s old sorority sisters until he learns Lanie is bringing a date. But there’s no time for him to pout because, you guessed it, there’s a murder that needs solving.

Michael Bailey was real ladies man until he took a naked plunge out of high-rise hotel room. Fingerprints on a wine glass lead the team to Holly Franklin, a founding partner in a prestigious law firm. The flustered attorney admits to sleeping with the victim, but she knows him by the name Jake Hendricks from Chicago. She claims the deceased got dizzy and accidentally fell to his death.

Lanie says Bailey was poisoned about 45 minutes before he met Holly by a substance that may have been hidden inside a protein shake. She also says the victim had sex with another woman in the hours before he died. Timelines suggest Bailey may have been poisoned by this other woman. Of course, the deceased lothario slept with many women, so there may be more than one out there who wanted this guy dead.