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Radley Sanitarium

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It all seems to lead back to Radley, doesn't it?


Radley Sanitarium is a mental institution where Mona Vanderwaal was sent, after her reveal as "A". Spencer Hastings was also housed there for a time, being placed in the same room as Mona was, and Marion Cavanaugh was also there for some time before the start of the series. It was a key place and location in Season 3. It has been closed down as of "Game On, Charles".


The Radley Sanitarium is located in the fictional Darkette County, Pennsylvania. It plays into the series when Mona Vanderwaal is in this facility, but we can guess it has something to do with the story Alison told Hanna about the girl who was sent to a mental institution after killing her twin sister.

The first time in the series the name "Radley Sanitarium" is referenced in "The First Secret". The Liars are walking across a street when they think they see someone in the window of a haunted house. As they walk away, the door opens and the camera cuts to a taxi parked in front of the house with the words "Radley Sanitarium" on the side of it.

Mona is sent to Radley Sanitarium after revealing that she is "A" in "UnmAsked". She is visited by someone in a red coat, similar to that of Vivian Darkbloom's: as we'll learn in Season 3, that someone was CeCe Drake. However, it has been stated by Marlene King that this was a hallucination, and the event did not actually occur.

  • Hanna has been visiting Mona at Radley for answers. Mona remains quiet the first few times Hanna visits. She finally talks to Hanna. ("Blood Is The New Black")
  • Mona freaks out when Caleb comes to Radley to visit. He tells her that she better not do anything to hurt Hanna. She then starts screaming and throws a table across the room. This results in her doctor making the decision to allow no visitors. ("Kingdom of the Blind")
  • In "Crazy", Mona leaves her room while Hanna and Aria are visiting and runs to the Children's Ward, where she brushes some dolls' hair.
  • In the mid-season finale, "The Lady Killer", Mona breaks out of Radley by dressing as a nurse and flashing the guard a fake ID (taken from Hanna in an earlier episode).
  • In "She's Better Now", Mona is released.
  • In "Out of Sight, Out of Mind", Spencer Hastings was placed in Radley after she was found wandering around, covered in blood, and in a catatonic state. She was identified as "Jane Doe" when a hiker found her.
  • In "Will The Circle Be Unbroken?", an orderly, E. (Eddie) Lamb reveals to Spencer that Toby's mother, Marion Cavanaugh was a patient at Radley.
  • In "A DAngerous GAme", Spencer is released from Radley. Mona tells The Liars that she was shown how to get in and out of Radley during her stay.  


Known Patients

  • Marion Cavanaugh - Before her death.
  • CeCe Drake - Checked in once, as Alison DiLaurentis.
  • Mona Vanderwaal - Formerly; was admitted twice previously for 7 months (March 2011 - early November 2011) and a few days after she claimed to have killed Detective Darren Wilden.
  • Spencer Hastings - Formerly. (1 week)
  • The Fragile Patient - Around when Marion was a patient.
  • Bethany Young - Before her death; Escaped the day Alison disappeared.
  • Big Rhonda - Bethany Young's ex-roommate at Radley.
  • Donna - Blonde that rips up her art work in "The Silence of E. Lamb".
  • Nicky - Girl being hauled away while Aria comes to visit Mona.
  • Charles DiLaurentis - Before his presumed death at the age of 16.  Except, he actually faked his death and escaped with Bethany Young "that night".
  • Lesli Stone - Revealed in "She's No Angel" to have spent some time in Radley and was the roommate of Bethany Young.
  • Sandy-A girl who was painting in Aria's art therapy volunteer program.
  • Maddie Ziegler's creepy dancing zombie character. Also the nutrition girl on the health poster Spencer sees in Radley Sanitarium's basement.
  • The twin girl from Alison's Halloween story who killed her twin sister Alice.

Book Comparisons


  • Janel Parrish (Mona Vanderwaal) revealed in an interview that the Radley Sanitarium plays a significant role in Season 3.
  • Named after the character, Boo Radley, from the novel To Kill A Mockingbird, which makes an appearance in the series as book Fitz's class reads their junior year.
  • Radley Santitarium was established in 1931.



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Start a Discussion Discussions about Radley Sanitarium

  • Aria was in Radley...?

    61 messages
    • This explains it very well. I always think of the movie "The Sixth Sense" when I theor…
    • ^ That's my hope for this show also, and given all of the oddly specific details and generally weird scenes that we can't seem to explain ye…
  • Charles is Alive and A.

    12 messages
    • PokeFanClaire wrote:Yeah,I don't think A is a transgender too. Remember the fake prom in 5x25? We finally saw Charles's body,and he's definit…
    • I just had a wild thought about "Charles"at the prom. That could have been " SARA" dressed in a tux with that specific mask, which happens to…

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