Connecting bathroom mirror

[admin]

Submitted by Blair:

Looking for the name of a low budget Canadian movie, late 70's/early '80s. Gang members kill a bunch of people in a (gay?) bar. Lone survivor runs to his house where he and a friend hold off the gang like "Assault on Precint 13". Our heroes elude the gang by going back & forth to both sides of the house through a connnectingn bathroom mirror! Ring any bells? Possibly filmed in Halifax.