Guest: Robert Cribb, Toronto Star investigative reporter and director of the Investigative Journalism Bureau at the University of Toronto

The opioid crisis has been raging, with deaths surging in Toronto, climbing 80 per cent from 2019 to 2020. Now, new research shows that this city's street supply of drugs is growing more toxic, stronger and potentially more deadly with additives that make it harder to bring back people who overdose. Today on "This Matters," we look at the opioid crisis now and explain how these drugs are more dangerous than ever.