A Russian couple, Victor and Alla Kolesnikow were murdered in Cookeville, Tennessee on August 5, 1998. Gregory Lance was arrested in April 1999, and subsequently convicted for the crime, based on circumstantial evidence that was either coerced by police or inconclusive.
One witness said that he was let out of jail for giving a statement to police, another contradicted his earlier statement to police.
Following his conviction, Gregory’s family hired a retired FBI Agent to assist them in investigating the case, and a likely alternative suspect was identified.
See this website for details on the case.