High Quality Content by WIKIPEDIA articles! The Event is an American conspiracy thriller television series created by Nick Wauters that aired on NBC from September 20, 2010 to May 23, 2011. The Event follows Sean Walker (Jason Ritter), a man who, while investigating the mysterious disappearance of his girlfriend, ends up unraveling the biggest cover-up in U.S. history; a cover-up which shapes the very core of mankind as a whole, whose implications are life changing.