The Getaway (Dexter)

"The Getaway" is the fourth season finale of the American television drama series Dexter, and the 48th overall episode of the series. It originally aired on Showtime on December 13, 2009.^[1] In the episode, Dexter goes to great lengths to stop Arthur, who now knows Dexter's true identity. Meanwhile, Debra learns the truth about Dexter's mother, the homicide division closes in on the Trinity Killer, and Rita reaffirms her support for Dexter, even as she acknowledges his hidden demons.

The teleplay was written by Wendy West and Melissa Rosenberg, based on a story by Rosenberg and Scott Reynolds. Directed by Steve Shill, "The Getaway" marked the conclusion of the Trinity Killer plotline, as well as the final regular appearance of guest star John Lithgow, who portrayed Arthur Mitchell and Julie Benz, a regular cast member since the beginning of the series. To protect the twist ending, Dexter producers imposed strict security measures, which included the distribution of fake alternate endings and forcing staff members to sign non-disclosure agreements.

"The Getaway" received critical acclaim, with several commentators calling the twist ending shocking, unexpected and likely to change the direction of the entire series. According to Nielsen ratings, the episode was watched by 2.6 million households, making it the most-watched original series episode in Showtime's history.