John Koestler

John Koestler is a fictional character appearing in the 2009 film Knowing, from which he serves as the protagonist. He is portrayed by Nicolas Cage.
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== Biography ==
He is a professor of astrophysics at MIT and the protagonist of the film Knowing. He is a widower and a single father to his son Caleb. After opening a mysterious envelope that has been sent to his son, he discovers a code that predicts future disasters. He sets out to discover the source of the code and its possible meaning, leading to a thrilling adventure.
==Appearances==
*Knowing (2009)
Category:Characters
Category:Male characters
Category:Knowing characters
Category:Characters portrayed by Nicolas Cage