When she was seven, Delia "Dee" Skinner witnessed the abduction of her best friend, Sibby. Even though Dee told the police everything she knew, Sibby was never found. Ten years later, Dee is the Seeker, the anonymous host of a popular true crime podcast that tries to solve missing persons cases. When another little girl in her town goes missing and the case is linked to Sibby's disappearance, Dee has a chance to find the answers to both the new case and Sibby's abduction with the help of her podcast's fans and the intriguing new girl. But to do that, Dee might have to reveal the Seeker's identity and confront her feelings about what happened all those years ago.