When Noam Tomaschoff ordered an at-home DNA test on a whim, he didn't expect to learn anything earth-shattering. But before the results even arrived, his parents revealed a secret they had kept for decades: he was conceived via sperm donation, meaning the man who raised him wasn't his biological father. Digging deeper into the results, Noam made another startling discovery — he had more than 35 half-siblings scattered across North America. The Toronto-born actor, writer and director sits down with Tom Power to share how he navigated that identity shock, and how turning the experience into an award-winning musical helped him make sense of it all. Our Little Secret: A True New Musical opens at Toronto’s CAA Theatre tonight.