Blinded by the Light (Dexter)

"Blinded by the Light" is the third episode of the fourth season of the American crime drama television series Dexter. It is the 39th overall episode of the series and was written by executive producer Scott Buck, and was directed by Marcos Siega. It originally aired on Showtime on October 11, 2009.

Set in Miami, the series centers on Dexter Morgan, a forensic technician specializing in bloodstain pattern analysis for the fictional Miami Metro Police Department, who leads a secret parallel life as a vigilante serial killer, hunting down murderers who have not been adequately punished by the justice system due to corruption or legal technicalities. In the episode, Dexter and Miami Metro investigate a new victim committed by the Trinity Killer, while also dealing with a vandal in his neighborhood.

According to Nielsen Media Research, the episode was seen by an estimated 1.24 million household viewers and gained a 0.5/1 ratings share among adults aged 18–49. The episode received positive reviews from critics, although some criticized the lack of character development and momentum.