Erik Knudsen is a Canadian actor best known for his roles in popular horror and sci-fi franchises. He gained significant attention as Daniel Matthews in Saw II (2005) and later starred as Robbie Mercer in the slasher film Scream 4 (2011). On television, he is widely recognized for playing the teenage tech genius Alec Sadler in the science fiction series Continuum (2012–2015) and Dale Turner in the post-apocalyptic drama Jericho (2006–2008).