Pretty Little Liars · Season 4
24 episodes listed, beginning 2013-06-11.
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- Episode 1
'A' is for A-L-I-V-E
60 minutes
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In the fourth-season opener, the girls team up with Mona to try to understand "A" better. Meanwhile, Aria doesn't look forward to seeing Ezra after their breakup; Emily makes plans for her future; and "A" charts a new course for Toby.
- Episode 2
Turn of the Shoe
60 minutes
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"A" almost kills Mona. Meanwhile, Aria takes self-defense lessons; Alison's mom gives Hanna a parrot; Toby reveals a poignant secret to Spencer; and Hanna uncovers something surprising about her mother.
- Episode 3
Cat's Cradle
60 minutes
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The girls are curious about Melissa's return visit to Rosewood. Meanwhile, Hanna meets with Det. Holbrook in an attempt to help her mom; a clue left by Ali leads the girls to an eerie mask maker; and Emily's mother is targeted by "A."
- Episode 4
Face Time
60 minutes
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A new detective arrives in town and questions the girls about Wilden's death. Meanwhile, Emily worries about the problems "A" is causing for her parents; Hanna is reluctant to accept Caleb's help; and Spencer sets a trap for her sister.
- Episode 5
Gamma Zeta Die!
60 minutes
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Spencer and Emily tour a college for different reasons: Spencer digs into Ali's link to the school, while Emily ponders her academic future. Elsewhere, Aria and her brother have a disagreement regarding their parents; Hanna uncovers something disturbing among her mom's things.
- Episode 6
Under the Gun
60 minutes
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Hanna lands in trouble while trying to protect her mom. Meanwhile, Emily attempts to assist Hanna, but this displeases "A"; Spencer and Toby head to Ravenswood, which turns out to be a very unusual town; and Shana shows up in some unexpected places.
- Episode 7
Crash and Burn, Girl!
60 minutes
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Caleb and Toby work together to investigate "A" and the incident involving the lodge fire. Meanwhile, Hanna tries to pretend that she's fine, but her pals worry about her; Aria finds Mike's behavior troubling; and Ezra's unsure of his role in Ari's life.
- Episode 8
The Guilty Girl's Handbook
60 minutes
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Hanna joins forces with Mona to help Ashley, despite Caleb's objections. Elsewhere, Spencer looks into Wilden's connection to another death; Emily reconnects with Zoe; and Jake helps Aria gain insight into her brother's new attitude.
- Episode 9
Into the Deep
60 minutes
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Paige throws Emily a surprise birthday party with unexpected guests: Jenna and Shana. Meanwhile, Mona helps out Hanna and Ashley; Ezra receives some upsetting news; and Emily meets with a prestigious swimming coach.
- Episode 10
The Mirror Has Three Faces
60 minutes
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Mrs. DiLaurentis asks Emily to move into Alison's old room. Meanwhile, Ashley's good luck changes; Ezra gets more bad news about his son; Aria tries to take an interest in Jake's hobbies; and "A" toys with a vulnerable Toby.
- Episode 11
Bring Down the Hoe
60 minutes
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The girls try to corner "A" at their school's hoedown. Meanwhile, Hanna is stalked by a classmate who has an explosive secret; Ezra seeks help from Aria just as she decides to commit to Jake; and "A" continues to manipulate Toby by promising to reveal info about his mom's death.
- Episode 12
Now You See Me, Now You Don't
60 minutes
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After receiving an intriguing riddle from "A," the girls embark on a road trip to Ravenswood, where they are surrounded by familiar faces. Later, one of the foursome disappears during a magic show; and a shocking discovery could mean war. Elsewhere, Hanna's joy over reuniting with her mother is cut short; and Toby uncovers something surprising about Wren.
- Episode 13
Grave New World
60 minutes
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The girls don Edwardian wear and head to a cemetery party to see if Ali is still alive, because a clue left by "A" suggests that she might be. Meanwhile, Caleb travels to Ravenswood and encounters a kindred spirit on his journey.
- Episode 14
Who's in the Box?
60 minutes
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The girls try to figure out who's buried in Alison's grave. Meanwhile, Caleb visits Rosewood; Ezra arranges some secret meetings; and Emily struggles to come to terms with the revelation that Alison is alive.
- Episode 15
Love ShAck, Baby
60 minutes
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The girls read Ali's diary and attempt to crack its code, but this proves difficult, especially because it's full of deeply personal stories about all of them. Meanwhile, communication between Spencer's dad and Ali's mom arouses suspicion in Spencer.
- Episode 16
Close Encounters
60 minutes
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Shana returns to town with a message from Ali, as well as an invitation for Emily to meet with Ali, but the girls question Shana's trustworthiness. Meanwhile, matters of the heart affect Aria and Hanna.
- Episode 17
Bite Your Tongue
60 minutes
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Aria's brother befriends Mona, but Aria disapproves. Elsewhere, Spencer digs into a new lead from Ali's diary and uncovers something shocking; Hanna's love of crime novels leads her to investigate Ali's grave; and Emily's dad grows worried about her.
- Episode 18
Hot for Teacher
60 minutes
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Spencer struggles to sleep and Hanna worries about her as her behavior gets eccentric. Elsewhere, Emily tries to mend fences with Alison; and Aria's many fibs begin to weigh on her.
- Episode 19
Shadow Play
60 minutes
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A frazzled Spencer envisions her life as a 1940s film noir as she searches for Ali and tries to find answers to her many questions.
- Episode 20
Free Fall
60 minutes
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Spencer wants to share her doubts about Ezra with Aria, but Ezra brings up her addiction problem first, undermining her credibility with her friends.
- Episode 21
She's Come Undone
60 minutes
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Aria begins to fall apart after learning of Ezra's betrayal, and she doesn't know whom to trust. Meanwhile, Spencer tries to show Toby and her family that she can fight her addiction without going to rehab; and Paige gets fed up with Emily's secrets.
- Episode 22
Cover for Me
60 minutes
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Emily confronts Ezra and Mona as she looks for answers. Elsewhere, Hanna tracks a new lead in Alison's case after she speaks with the police; and Spencer and Aria turn to new men as they try to pick up the pieces of their lives.
- Episode 23
Unbridled
60 minutes
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The girls take part in a bridal fashion show for charity in order to get closer to Ali's mom, who they suspect may be hiding some secrets. Meanwhile, Ella and Jason return to town; Aria continues to cope with her heartbreak; and Hanna tries dating again.
- Episode 24
'A' is for Answers
60 minutes
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In the fourth-season finale, the girls get answers about Ali and the night she vanished after they come face-to-face with her.
Original air-order information: TVmaze, CC BY-SA 4.0. Listed through September 10, 2026. Regular episodes only; specials and future air dates are not included.