Augustine Lee Augie Floyd vanished after a night out in Mount Pleasant, Michigan. He was 18 when he attended a T-Pain concert at Central Michigan University on October 12, 2007, then went to a gathering on the nearby Isabella Indian Reservation. An argument at the party led to him being thrown out; he drove away but later returned. The last reported sighting put him outside in the early morning hours around 4:00 a.m., next to his black 1995 Cadillac DeVille. Neither Augustine nor the Cadillac, which had rear-end damage and a trunk held closed with a bungee cord, has been found.

Investigators searched wide areas of Isabella County and conducted an extensive multiagency inquiry involving tribal police, county sheriffs, state police, the FBI and the Bureau of Indian Affairs. The case was reclassified as a probable homicide in December 2008, and authorities have said they believe multiple people may have been involved; a special Bureau of Indian Affairs unit later took on the investigation. Augustine was a member of the Grand Traverse Band of Ottawa and Chippewa Indians, enrolled at Northwestern Michigan College, about five feet ten inches and 183–185 pounds, with short brown or black hair, brown eyes and tattoos on his neck and upper right arm.

The absence of the large, distinctive vehicle remains one of the case’s most puzzling elements. If anyone saw Augustine, his Cadillac, or has information about the party that night, please come forward.