Molly McGuire returns to Ireland when her marriage in the United States ends, looking forward to reconnecting with her family. When her childhood nemesis, Margery Denton, shows up at her welcome home party, and finds out Margery is dating her brother, Dillon, she's less than happy! When Molly, known globally as a klutz, stumbles across Margery's body, both she and her brother are suspects. Molly decides to channel her inner Miss Marple and find the actual killer, even though sexy Garda Detective Liam Fitzgerald wants her to stay out of it. Can Molly fumble through the clues and figure out who the killer is before the wrong person is arrested for murder?