Maigret at the Coroner's

Maigret is touring the US to observe American methods. No one expects anything of him except to drink a great deal and be sociable. FBI officer Cole is his guide in Arizona. But after a bit, Cole needs to attend to his own affairs, so he parks Maigret at a coroner's inquest for a few hours. A young woman who spent the night drinking with five Air Force men was found on the railroad tracks torn to shreds by a train. Was it a gruesome mischance, or murder?