It seemed so perfect, so scientific - a hair test that could objectively determine whether parents of young children were abusing drugs or alcohol. But it turns out the 'Motherisk' hair testing was deeply flawed - with devastating results for families all across Canada.

It's a story of dark money, dirty politics and powerful people...When Donald Trump gave TransCanada the nod to build a pipeline that would carry Canadian crude oil to the Gulf of Mexico, it seemed like liquid gold for the Alberta-based company.