Season 6 Edit
To celebrate the birth of Cecilia Halpert, Andy purchases a commemorative copy of the day's newspaper. Unfortunately, the headline for the day she was born is "Scranton strangler strikes again." ("The Delivery")
To demonstrate the utility of wearing one's cell phone on one's belt, Dwight pretends to call 911 to report the Scranton Strangler.
Dwight dresses up as the strangler on Halloween and acts like he's strangling Jim.
In Viewing Party, the cold open features a police standoff and car chase against the Scranton Strangler, presumably ending with his capture.
In "Classy Christmas, Part 1" Toby has to take a leave of absence in order to serve jury duty on a "high-profile case." Although he never explicitly states it, he strongly suggests that the case is the trial of the Scranton Strangler through verbal and physical clues. He then returns to the office and is asked about the strangler's appearance. It is here the gender of the strangler is confirmed.
In the episode "Michael's Last Dundies" Toby, while receiving his Extreme Repulsiveness Award, uses his acceptance speech as a platform to announce to the audience that he was part of the jury that found the alleged Scranton Strangler guilty and sentenced him to death, but he is "not so sure he's guilty anymore". No more is revealed as Toby is cut off by Dwight, who begins playing "Oh Yeah" by Yello over his acceptance speech.
Dwight implements the "Accountability Booster" which is supposed to increase efficiency and reduce errors by keeping track of mistakes made by the office employees. The office finds that the error checking is far too stringent, they try to access Dwight's computer by guessing his password. Dwight sees this and sneaks up behind them all and suggests that they try "scrantonstrangler666" as a password attempt.
In addition, 4 minutes into S8:E13 Toby mentions while on jury duty, prosecutors used empañadas from Ernesto’s to reconstruct the attacks of the strangler. In the same episode, an empañada vendor strolls into the office and upon seeing Toby, makes a choking gesture with his hands, implying he was a juror with Toby on the Strangler case. The two embrace, further establishing that they have seen each other before.
When Oscar admits that the numbers he handed in to Toby were false and he simply did it because he wanted to frame Kevin, Toby suddenly becomes worried and admits to Oscar that when he was on the Scranton Strangler jury he was pressured to convict him despite believing he may have been innocent (The Boat).
Toby notes that it is the anniversary of the trial of the Scranton Strangler (and reveals his real name). Nellie, who has never heard of him, listens to Toby tell his story of when he was on the jury. Toby reveals how he did his own research on finger printing and began to think that he was innocent (Dwight Christmas).
Toby mentions his suspicions about the strangler trial, at which Nellie expresses irritation at his lack of action. He decides to travel to the prison to confront the strangler about his belief, but when speaking to the strangler, Toby is attacked, leaving him with damaged vocal cords and a neck brace. This confirms that the man behind bars was the strangler and Toby was wrong in his suspicion that he was innocent. (Moving On)
- Season Six: The Delivery, Happy Hour, Body Language
- Season Seven: Costume Contest, Viewing Party, Classy Christmas, Part 1, Classy Christmas, Part 2, Michael's Last Dundies
- Season 8: Doomsday
- Season 9: The Boat, Dwight Christmas, Moving On
Many fans have created theories on who the actual Scranton Stangler is. Here are a few of them:
- Mose is the Scranton Strangler. His crazyness mixed with his acess to dwights arsenal and dwights farm for burying bodies, makes him perfect. (One episode mentioned that many horse burials have occurred on the farm) In S8E15, Dwight records a death message to his son, saying he is the legitimate heir to Schrute farms and to “kill Mose before he kills you,” indicating Mose’s violent nature. He doesn't do it for pleasure, but rather he works as a hitman for Bob Vance, who is a mob boss (The Outburst).
- Toby Flenderson is the Scranton Stangler. While the Strangler struck at many random times, they seemed to have started after Jim started dating Pam, who Toby had a crush on. As Pam and Jim's life improves, he realizes how terrible his life is. Also, the type of car seen during the chase was also seen in the Dunder Mifflin parking lot and Toby was the only person not present for the viewing, despite the fact that they were all siting around Toby's desk. Also, there was a call that had to be personal because there was nobody at the front desk but Toby doesn't have any personal relationships. It is very possible that he was going to confess before he got caught.
- Jim Halpert is the Scranton Strangler. This was suggested when one fan noticed that the Stangler only struck when Jim was in a stressful situation.
- Creed is the Scranton Strangler due to the many suggestions that he has killed many times before. Including the Murder episode where he comes in all bloody. Shortly after, he runs away. Additionally he killed and assumed the real Creed Bratton's identity. However, there is no suggestion that he is the Scranton Strangler, only that he has killed many times before.