. >> reporter: adrienne martin was unresponsive in the bed of one of the most powerful men in town. august busch. >> is she breathing? >> we don't know. it's dark back there. i'm going to get a light and try to see. >> reporter: paramedics couldn't save her. >> she was a beautiful girl but she was a lot more than that. she was a mother. >> reporter: if it was anyone else, you would have likely never heard about it. but the fact she was dating busch went out like a lightning bolt. >> this is a story that's captivated st. louis. >> 27-year-old martin was found dead. >> reporter: after all, the man known around here simply as the fourth is the former an huzic busch ceo, heir to an iconic american brand -- >> budweiser. >> what's up! >> reporter: and part of a family that's put its name on st. louis like in other. >> started making budweiser. >> couldn't be more proud to be america's favorite beer. >> reporter: from the historic all-american beer to countless parks and buildings, the busch name is inescapable in st. louis. they're the former owners of the st. louis cardinals. >> game th

kevin martin. >> he was surprised to hear those results, because adrienne was always anti drug, is what he told me. >> reporter: martin's husband told "the post dispatch" that adrienne had a heart condition, but never suspected she was using drugs. medical experts say the two should not mix. >> it can be a deadly combination, especially in people who have underlying heart problems. >> reporter: martin and busch had been dating for two years when he found her unresponsive in his home december 19th. >> emergency 911. >> yeah, we need an ambulance. >> what's the problem? >> this girl is just not waking up. >> reporter: when the 46-year-old busch was a college freshman, he was involved in a crash that killed his female passenger. no charges were filed. and in 1985, he was accused of trying to run down two detectives during a police chase. he was eventually acquitted. but busch seemed to overcome his troubles, and his playboy past. >> no one had ever pointeded to any problems, at least within the last 20 years. but he had been into rehab for depression and for, quote, other issues. he never