The Vanished

A university professor and Seol-hee's husband, he harbors a secret affair and a troubling interest in a toxic drug he studied. He plans to poison his wife to secure his future, but as the case unfolds, he finds himself entangled in a web of suspicion and manipulation surrounding the missing body.

A famous married chaebol whose sudden death sparks a high-stakes investigation and the sensational theft of her body. Her wealth and status cast long shadows over the case, influencing motives and the willingness of others to bend the truth.

A detective leading the inquiry who is driven by a buried grief—years earlier his wife died and her body vanished. He allies with Hye-jin to enact his revenge, ultimately stealing Seol-hee's body and leaving clues to mislead the investigation while aiming for personal justice.

A mysterious figure who is revealed to be Jin-han's mistress and the sister of Jung-sik's late girlfriend. She becomes a pivotal ally in the plot, complicating loyalties and helping to blur the lines between collaboration and betrayal.

The police chief who rages against the pace of the case, pressing investigators and occasionally clashing with Jin-han. His temper heightens the tension as the detective's calculated moves threaten to outmaneuver official scrutiny.