L'Appart du 5e

L'Appart du 5e was a 2013-2016 French-language Canadian mystery series that aired on the VRAK television network. The series centered on three young students- Greg (Guillaume Perreault), Vicky (Sarah-Jeanne Labrosse), and Justine (Marilou Morin)- who move into a Montreal apartment that is haunted by the ghost of Theo (Yan England), a teenager who was murdered on his 18th birthday. The three students are pulled into a world of supernatural beings as they try to help Theo solve the mystery of his murder.

La Taupe (Season 4, Episode 9)
Justine's sister Marianne (Cynthia Wu-Maheux) is revealed to be a spy who is under the hypnotic control of Hans Schmitt (Paul Ahmarani), an evil ghost.

Orphan (Season 4, Episode 10)
In a brief scene, Marianne goes into a trance and carries out a mission for Schmitt.

Histoires de sœurs (Season 4, Episode 12)
Justine finds Marianne's behavior odd, especially when she appears to fall into a trance mid-conversation. Later, Justine's hidden camera catches Marianne snooping around the apartment.

L'Heure de la pause (Season 4, Episode 14)
Schmitt continues to program Marianne to carry out his commands.