Andi Anna Jones, so-so travel agent and amateur sleuth, puts aside her resentment of her father's widow and books a sixtieth birthday cruise to Cancun for Ruby and three friends. Never does Andi imagine the cruise will include the murder of a has-been lounge singer—or that Ruby might be the main suspect. Flirting with more than danger after arriving in Mexico, Andi connects with charming local sheriff, Manual Gonzales. An embarrassing night involving the sheriff, too many margaritas, and a Mariachi band, can't quell her determination to clear the name of her ex-stepmother. While gathering clues and interviewing witnesses, however, she suspects dear old step-mom isn't the only one in jeopardy.