Unknown Number: The High School Catfish is another Netflix true-crime documentary built around a deceptively simple premise. A teenage girl and her boyfriend begin receiving abusive messages from an unknown number, sparking an investigation that quickly becomes more complicated than it first appears. What starts as teenage drama gradually unfolds into a surprisingly layered mystery.

The documentary does a good job of revealing information at the right pace, keeping you guessing without resorting to unnecessary sensationalism. It's as much about the fallout of online harassment, rumours, and teenage relationships as it is about identifying who was behind the messages. The interviews are strong, the storytelling is clear, and the twists land without feeling forced.

The documentary builds towards an ending that stays with you, and days later, you'll still be asking one question: why?