McKinsey & Company has agreed to pay $650 million as part of a deferred prosecution agreement related to its role in the opioid crisis. The consulting firm was accused of collaborating with pharmaceutical companies, including Purdue Pharma, to mislead prescribers about pain medications. Over the years, McKinsey has faced significant financial repercussions, having already paid nearly $1 billion in various settlements. The agreement requires the firm to adhere to strict oversight and prohibits it from advising on opioids in the future.