On a Wednesday afternoon in January, Toronto is positively balmy. Orphan Black stars Tatiana Maslany and Maria Doyle Kennedy are in T-shirts and light pants as they film a bright scene for the drama's third season. The sun shining in the windows is so bright it's almost blinding.

Of course, this is all taking place on an indoor TV set at Pinewood Toronto Studios that's been constructed and lit to resemble a warm Mexican cantina. Ten feet away, however, anyone who isn't on camera is huddled in sweaters and coats, since the harsh winter air keeps sneaking inside whenever anyone enters the television studio. But regardless of the temperature, everyone on the crew is rapt as Maslany — done up as her volatile clone character Helena — shovels food into her mouth in a way that is simultaneously adorable and menacing.

The third season of Orphan Black doesn't debut until April, but production has been underway for months. Specific details about the new episodes are hard to come by — nobody wants to be the one to spill the beans about what's next for Helena and the approximately 500 other characters Maslany plays. Heck, when asked, almost everyone remains vague on exactly which episode they're working on ("Sixish, maybe? Or maybe seven?" says one publicist). What is for sure is that actor Ari Millen is back, taking on the roles of a whole new set of male clones to complicate matters for everyone involved.

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But even with the top-secret tone of the production, the cast and producers are open about their love for the production's home base. "What's great about Toronto is that there's a huge wealth of talent," says Millen, who's also guest-starred on several other shows that shoot in Toronto, including SyFy's 12 Monkeys and The CW's Reign. "I sometimes see the same people, but more often than not, it's new faces every time."

And Orphan Black is one of the few TV shows filmed in Toronto that's actually (sort of) set in Toronto. While 12 Monkeys is set in Phillidelphia and Baltimore, and USA's Suits and FX's The Strain are set in New York, on Orphan Black, Toronto actually gets to be itself for once — the show features familiar landmarks, Canadian signage, and neighboring suburbs. Of course, to those unfamiliar with the city's appearance and geography, the show could easily take place in any major North American city. It's not Toronto, but it's not not Toronto.

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"It's that kind of thing of, like, Americans want it to be not Canada, and the Canadians want it to be not America, so you kind of end up in this zone of kind of trying to be North Generica," says co-creator John Fawcett of Orphan, which is a co-production between BBC America and Canada's Bell Media. "Most Americans know we're a Canadian show now. So I don't think we're trying to hide anything anymore."

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