Maggie Crozat, proprietor of a historic Cajun Country B&B, prefers to let the good times roll. But hard times rock when a new cell phone app makes it easy for locals to rent their spare rooms to tourists. With Halloween approaching, she conjures up a witch-crafty marketing scheme to draw in visitors. But the witchcraft has also conjured something: her B&B guests are terrified by sightings of the legendary rougarou, a cross between a werewolf and vampire. When someone costumed as a Rougarou is murdered, the rougarou mask having been poisoned with strychnine, Maggie is on the case.