In "Trophy Girl", the R. C. Harris Water Treatment Plant stood in for the exterior of the Mental Health Centre Penetanguishene, referred to in the episode as Oak Ridge Asylum. The serial killer Christopher Scheer was locked up in Oak Ridge; and Det. Nick Knight went there in the hope that talking to him would provide insight into the motivation of another murderer with a similar modus operandi. In one of the two exterior shots, Nick's car is being driven towards the building; in the second, a different car drives past it in the opposite direction.