Davin Cole couldn’t stop thinking about the last pill left in his bottle of painkillers as he drove home from his shift at Mission Station.
The acting San Francisco police lieutenant wasn’t due for a refill for more than a week. But in four days, he was flying to Mexico with his family for a destination wedding. Just in time for withdrawal symptoms to set in, he thought.
He couldn’t wait. He needed more pills now. He considered looking for a dealer on Craigslist, but knew the risk all too well: What if they were laced with fentanyl?…