Just off Toronto’s West Queen West, a few blocks past Trinity Bellwoods Park, looms a narrow three-storey Victorian home in dusty red brick. Its front parlour has housed a number of short-lived enterprises: art galleries and jewellery stores, cafés and Web-design firms. But never has it been so fruitfully commandeered as by its current tenants. These are the headquarters of Zapruder Films. And it’s here that director Matt Johnson – alongside the faithful cadre of producers, editors, cameramen and interns that constitute his crew – furiously, indefatigably toils.