Welcome to Law.com Class Actions: Critical Mass, Law.com’s weekly briefing for class action and mass tort attorneys. I’m Amanda Bronstad. A juror in the high-profile opioid trial in Cleveland arrived in court with research from home, but U.S. District Judge Dan Polster still denied a mistrial motion. GMU’s Antonin Scalia Law School delved into the debate over rules for multidistrict litigation. Find out which firm got retained to represent the family of a man shot by a security guard while at a Lowe‘s parking lot in Oregon.