Orphan Black, the upcoming series from Space and indie producer Temple Street Productions, has begun production in Toronto, with new additions to the cast also announced.

Irish-born actress Maria Doyle Kennedy (The Tudors) and Canuck actors Dylan Bruce (As The World Turns) and Jordan Gavaris (Degrassi) have joined the cast, to star alongside previously announced series lead Tatiana Maslany.

Kevin Hanchard (The Listener), Michael Mando (Territories), Elizabeth Saunders (Saving Hope) and Ron Lea (Saving Hope) will also star.

Orphan Black follows a young woman, who, after witnessing a woman’s suicide, assumes her identity thinking it will solve her problems, and is instead thrust into a mind-bending mystery around the identities of both herself and the dead woman.

“[Orphan Black has] become a passion project that just happens to touch upon the very timely topic of self-identity. When we began working on this series, we were driven by the quality of the writing and the scope of the themes,” said Temple Street exec producer and co-president David Fortier in a statement.

Temple Street will produce 10 one-hours for Space and BBC America, with the series slated to premiere in 2013.

Orphan Black is co-created by Graeme Manson and John Fawcett, who also exec produce with Ivan Schneeberg and Fortier of Temple Street Productions. Manson also serves as writer and Fawcett as director.

BBC Worldwide will distribute the series internationally.