In the second season of The Alienist (subtitled Angel of Darkness ), the fourth episode is titled which originally aired on July 26, 2020 . This episode serves as a critical turning point in the investigation into the kidnapping of baby Ana and the mystery surrounding the Lying-In Hospital. Episode Overview: "Gilded Cage"
: Dr. Laszlo Kreizler (Daniel Brühl) continues using hypnosis to help Señora Linares recall details of her baby's kidnapping, leading her to identify Libby in a photograph. Key Themes & Reception L'alienista 2x4
: Much of the episode’s personal drama unfolds at a lavish ball hosted by William Randolph Hearst for his goddaughter Violet and John Moore (Luke Evans). The setting highlights the class divide, described as a "Gilded Cage" where social expectations clash with personal desires. In the second season of The Alienist (subtitled
: The episode marks a major revelation as Libby Hatch is confirmed to be the killer. In a particularly graphic and disturbing scene, Libby murders the Matron by stabbing her repeatedly in the neck. She then leaves her "calling card" by painting eyes on the Matron’s eyelids, a detail connected to post-mortem photography. Laszlo Kreizler (Daniel Brühl) continues using hypnosis to
: Sara Howard (Dakota Fanning) tasks her operative, Bitsy Sussman, with infiltrating the Lying-In Hospital. Bitsy successfully observes the harsh treatment of staff and patients by the Matron, particularly the verbal abuse directed at a nurse named Libby.