Dr. Kirk Turner, a successful dentist, did not dispute that he killed his wife, Jennifer, in 2007. But he claimed he did it in self-defense, after Jennifer first attacked him with a seven-foot spear. At trial, prosecutors argued Turner staged the scene to cover up murder, but conflicting testimony complicated the case. “48 Hours" Correspondent Peter Van Sant reports.

This classic "48 Hours" episode last aired on 7/26/2011. Watch all-new episodes of “48 Hours” on Saturdays and stream on demand on Paramount+.