SKOWHEGAN, Maine — A Fairfield man accused of killing his wife took the stand Friday and denied slaying Valerie Tieman in August 2016, but admitted that he lied to investigators and did not immediately report her missing. Luc Tieman, 34, of Fairfield is charged with intentional or knowing murder. His trial began Monday before Superior Court Justice Robert Mullen. Valerie Tieman’s body was found on Sept.