Carlos Walker, 52, was reported missing after he failed to return home in mid-April 2013. A longtime team leader at the Detroit Medical Center and a devoted husband and father, Walker was also recorded in some documents under the last name Buffin. His twin sister Eulalia Lovelace remembered him as a kind, religious man.

On Monday, April 15, 2013, police found Walker’s car abandoned at Biltmore and Thatcher in the Brightmoor neighborhood on Detroit’s northwest side. Officers opened the trunk and discovered his body; the initial investigation determined he had been beaten to death. Investigators learned Walker had recently received a tax refund of about $2,500. When his body was found, the money, his wallet and his glasses were missing, and authorities described the evidence as consistent with a robbery that turned fatal.

Crime Stoppers of Michigan offered a cash reward for tips, and the family publicly appealed for information. The case remains unsolved; no arrests have been announced. If anyone knew Carlos or saw activity around Biltmore and Thatcher in April 2013, can you help by sharing what you remember?