Did you ever find the Emerald City, Taylor?

The Ghost Sonata
Season 1, Episode 4
104 Promo3
Air Date April 10, 2019
Written by Joseph Dougherty
Directed by Roger Kumble[1]
Episode Guide
...If One of Them is Dead
The Patchwork Girl

The Ghost Sonata[2] is the fourth episode of the first season of Pretty Little Liars: The Perfectionists.


Alison hunts for Taylor, thinking she may be alive and in hiding. Caitlin, Ava and Dylan realize their newfound true friendship is threatened by still buried secrets and debate coming clean to each other. And the Perfectionists try to tighten a noose around their number one suspect.[3]

Main Cast

Supporting Cast


  • The Ghost Sonata is a 1907 play in three acts by Swedish playwright August Strindberg.
    • It is about "a young student, who idealizes the lives of the inhabitants of a stylish apartment building in Stockholm. He makes the acquaintance of the mysterious Jacob Hummel, who helps him to find his way into the apartment, only to find that it is a nest of betrayal and sickness. The world, the student learns, is hell and human beings must suffer to achieve salvation. The play centers on a family of strangers who meet for the sake of meeting ... they simply sit and bask in their own misfortune."[7]
  • Casting for this episode and "The Patchwork Girl" simultaneously began on October 23, 2018, and was lead by Charlie Craig, Norman Buckley, and director Roger Kumble[8].
  • The table read for the episode occurred on October 30, 2018.[9]
    • During the table read, the cast and crew surprised Janel Parrish with a birthday celebration.[10]
  • Tech scouting for "The Ghost Sonata" and "The Patchwork Girl" occurred on October 31, 2018.[11]
  • Famous in Love star Niki Koss shadowed director Roger Kumble for both "The Ghost Sonata" and "The Patchwork Girl".[12]
  • The production meeting occurred on November 1, 2018.[13]
  • The Ghost Sonata was filmed simultaneously with The Patchwork Girl.[14]
  • Evan Bittencourt received his script on November 13, 2018.
  • Filming ended late on November 21, 2018, on the day before Thanksgiving.[15].
  • On April 1, 2019, Marlene King tweeted a line from "The Ghost Sonata" that said, "Did you find the Emerald City, Taylor?".[16]
  • The "rat" was revealed to be Caitlin Park-Lewis.

Nods to Pretty Little Liars




Behind the Scenes




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