Christmas arrived before Halloween for a notorious Big Pharma firm. Federal prosecutors effectively gave its family founders and its executives gilded skates, so they can slide away for now from major criminal charges and severe financial penalties for their part in fostering the opioid abuse and drug overdose crisis that has killed hundreds of thousands of Americans and cost the nation more than $1 trillion.

The devil is in the details in the announced settlement by the U.S. Justice Department with Purdue Pharmaceutical, the maker of the powerful painkiller OxyContin.

Federal prosecutors painted a picture of their planned deal with Purdue as an historic, $8.3 billion knock-out for a company that critics say played a major role in the opioid crisis, with the firm creating a template for hyping falsehoods about the safety and effectiveness of prescription painkillers. As the Washington Post reported, the first glance at the multibillion-dollar Purdue settlement seems tough: