Commentators noted that the script was well written and that the episode was the "strongest outing" since "Pilot" broadcast on March 1, 2012.
Upon airing, the episode garnered 3.18 million viewers in the United States and a 1.0/3 rating-share in the 18–49 demographic, according to Nielsen ratings.
The show centers on Michael Britten (Jason Isaacs), a police detective living in two separate realities after a car accident.
In this episode, Michael deals with a case involving a serial killer Gemini, who had killed another person in the "green reality".
FBI agent Elizabeth Santoro (Megan Dodds) insists that he is dead, as she killed him herself after he had committed a huge crime.
He starts to cut Santoro's wrist off, and Michael and his partner in the "green reality", Isaiah "Bird" Freeman (Steve Harris) get her.
Meanwhile, in the "red reality", Dr. Jonathan Lee (BD Wong) states that Michael and his wife Hannah Britten (Laura Allen)'s marriage is falling apart.
The episode opens in the "red reality" (where Hannah is alive and Rex is not from the car accident), and Michael Britten (Jason Isaacs) is jogging around Los Angeles.
In each case, a killer, nicknamed Gemini (Salvator Xuereb), vertically slashed the victim's wrists and carved a Roman numeral in their chests.
The murders have taken place all across the United States, but everyone believes that Gemini is dead after an FBI agent Elizabeth Santoro (Megan Dodds) had shot him.
They take him to Dr. Banks (Chris McGarry) and have him check his stomach, where he finds a United States two-dollar bill in it.
Santoro lets Harper decide and she tells the detectives to pull the files on law officers.
Later in the "green reality", Michael suggests they check cheap motels in the area, since Gemini set up base a couple miles from the sites of his murders.
[3][4] The episode featured guest performances from many actors including Laura Innes as Tricia Harper, Michael's captain officer in the series, Chris McGarry as Dr. Banks, a doctor working at the Los Angeles Police Department, Salvator Xuereb as Gemini, and Megan Dodds as Elizabeth Santoro, an FBI agent.
[7] It was simultaneously broadcast on Global in Canada, and was subsequently aired on Sky Atlantic in the United Kingdom on June 1, 2012.
[8] The episode obtained 228,000 million viewers in the United Kingdom, making it the fourth most-watched program for that week on the channel behind Smash, Hit & Miss, and Game of Thrones.
[12] Preece wrote that the episode "used interesting story ideas, [meaning] the writers have bigger plans for the weeks ahead".
[3] Screen Rant's Kevin Yeoman said that the episode "works best when its procedural elements take on a sort of background essence".