August Busch IV, 46, the heir to the Anheuser Busch fortune, is at the center of a murder mystery, as his model girlfriend, Adrienne Nicole Martin, 27, was found dead in his St. Louis, Missouri mansion. The police have stated they found no evidence of foul play, leaving many to speculate as to the cause of death.   

Adrienne Nicole Martin

The Busch family are no strangers to controversy and tragedy, as a number of high profile incidents placed the family's name in the paper for things other than their business. In 1983, Busch was in a car accident that killed a woman he'd met at a bar.