“Fatal Flaw” Filming Locations

Mary teams up with the police to bring down Olivia while Nicole joins Des to plan Brandon's death.

Mary Kills People episode “Fatal Flaw” was filmed in Toronto, Mississauga, & Brampton in Canada.

Valet Car Wash as Car Wash

Olivia drives through a car wash to block the bug and makes a proposal to Mary and they find the police waiting when they emerge.