I read that book a few years ago. If memory serves, the author alleges that Parker may have left the Netherlands one step ahead of a murder rap.

Peter Guralnick, author of a superb, two-volume bio of Elvis (highly recommended)says Parker got a bad rap for "giving away" Elvis's performances and cheating him on commisseions. Guralnick gives Parker a lot of credit for keeping Elvis's career alive when it should have been dead--mostly by rationing out his performances and recordings at just the right pace. He also gives Parker credit for creating incredibly lucrative movie deals for Elvis. Even though most of the movies sucked, Elvis made a fortune.