Karl Gajdusek is an American screenwriter, producer, and playwright. Karl Gajdusek was born in 1968 in San Francisco, California, United States. He was the showrunner for the first season of the Netflix series Stranger Things and the co-creator of the TV series Last Resort with Shawn Ryan. They were both also executive producers for the series. Gajdusek also wrote for the series Dead Like Me and wrote the film Trespass (2011). He co-wrote the screenplay for the 2013 Tom Cruise movie, Oblivion and November Man, which was released in 2014.

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