Quirky criminology professor Cait Morgan is invited to be a guest lecturer at a Budapest university, and although she's hesitant to go without her husband and trusted sidekick, Bud, who must stay home to care for his aging parents, she decides to make the month-long trip on her own.

Soon after arriving, one of her new students, Zsofia, pleads with Cait to help her uncover any clues about her grandmother's unsolved murder, which happened decades ago on the campus of Cait's own home university in Canada. Cait agrees, but when she is repeatedly hassled by an creepy colleague, and as bizarre details about Zsofia's family members come to light, Cait is beset by uncertainty.

As she gets closer to the truth, Cait's investigation puts the powers-that-be on high alert, and her instincts tell her she's in grave danger. Bud races to Budapest to come to Cait's side, but will it be too late?