When José enters Sue’s Diner into a prestigious baking competition held aboard a scenic train ride, Ivy’s thrilled at the chance to showcase their culinary skills. The excitement takes a dark turn when one contestant—a notoriously difficult rival—ends up dead. The victim’s sour attitude meant almost everyone had a reason to dislike him, and Ivy quickly realizes the murderer could be anyone on board. Ivy dives into the investigation, unearthing secrets, rivalries, and twisted motives. Can Ivy piece together the clues before the competition reaches its final stop, or will the killer derail her sleuthing efforts—and make her the next target?