From author Rosalie Spielman comes a cozy Christmas caper! For marine biologist Nelly O’Hare, "Mele Kalikimaka" on the island of Kauai means enjoying the holiday with her cute golf pro boyfriend, Jack Frango, getting ready for her bestie, Kiki Hepburn’s, wedding, and lots and lots of Hawaiian rain. Nelly is excited for it all—even the rain.

Mr. and Mrs. Barrington, Kiki’s high society parents, have come to Aloha Lagoon for the holiday and the wedding. Unfortunately, they've brought along some not-so-welcomed guests in tow. But when the rude and cantankerous couple create havoc among the wedding party, everyone is shocked when they're found dead on the golf course. Even more shocking is that the only people present at the scene at the time of the crime are Mr. and Mrs. Barrington—and Jack.

Nelly tries to stay out of the ensuing investigation, but despite her best efforts, she's soon drawn in by the murderer on the loose. The victims' adult children, their conniving female friend, and the family’s big-tipping lawyer all had a reason to want the couple gone, but it’s going to take some careful snooping to figure out who the putter-wielding killer really is. Will Nelly be able to find the truth before her friend's nuptials? Or will the wedding be derailed as the murderer strikes again...