Haunted by the death of her sister and the decades-old cold case of best friends Bailey and Celeste, eighteen-year-old Tru becomes entangled with a mysterious girl named Rio, as their pursuit of the truth unveils an otherworldly connection to the victims and puts them in the crosshairs of a potentially resurfaced killer.

"A precocious puppy with a penchant for solving mysteries is newly adopted into a family, causing havoc for their comfortable housecat"--

Despite their resolution to avoid mysteries and podcasts, Cam and Blair re-enter investigative mode when Mattie Brosillard seeks their help, convinced that someone is impersonating her sister Lola, who disappeared five years ago.