The race heads east to Niagara-on-the-Lake, Ont., where a roadblock has teams revved up and they try to sniff out a win. At the detour they must create the perfect arrangement or row to success, and a twist has teams questioning what’s next. Airs: Tuesday, August 15 at 9 p.m. ET/PT on CTV, CTV.ca, and the CTV app.