Warning: Spoilers ahead for The Guest

The Colombian thriller series The Guest (La Huésped), out on Netflix on September 24, follows a family full of secrets. Lorenzo (Jason Day), a candidate for attorney general, is married to Silvia (Laura Londoño), and their relationship is strained due to Lorenzo’s infidelity. Their daughter, Isabela, struggles with drug addiction, bringing further instability. When Sonia (Carmen Villalobos)—a woman Silvia met during a recent trip and with whom she shared an intimate encounter—arrives at the family’s home unexpectedly, her presence sets off a chain of events that puts everyone's lives at risk.

The finale of the 20 episode series reveals Sonia’s motivations and brings a series of manipulations and confrontations to a close. Here’s what to know a

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