The Event (2010–2011) When a man goes looking for his missing girlfriend, he stumbles upon a government conspiracy that is bigger than the president himself. Jason Ritter stars as Sean Walker, a regular guy who launches an investigation into the disappearance of his fiancee. What he doesn't realize is that his probe begins to expose the biggest cover-up in American history. Walker's actions affect a number of strangers, including the newly elected president (Blair Underwood), and the global conspiracy he's uncovered could change the fate of mankind.