Carla Stefaniak's last messages described a power outage and a strange situation near her Airbnb in Costa Rica. The explanation given afterward did not match what investigators found. This video tracks the final communications, the security footage, and the physical evidence that drew attention to Bismark Espinosa Martínez, the property's security guard. The case shows how a carefully constructed account can begin to unravel when investigators compare it with the location's actual timeline. If you enjoy modern cases built around digital messages, disputed alibis, and hidden-in-plain-sight evidence, this one is for you.

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