A synthetic opioid more than 40 times stronger than fentanyl — ordered online and delivered in days. CBC’s visual investigations unit uncovered how nitazenes, a new and deadly class of opioids, are flooding Canadian streets through online ads, social media and the mail system.

Senior reporter Eric Szeto explains how traffickers exploit gaps in the system — and how this invisible trade is costing lives.

Host Marcy Markusa speaks with Angela Lavallee, whose 27-year-old son Kyrel — known as Blue Thunderbird Man — died of an accidental overdose just days after being released from detox. Angela shares her son's story and why she's now fighting for change.