It was a telemovie. Story of a man who murdered his wife in their home, disposed of her body by wrapping it in a rug then he cleaned the house. After her parents begged police to investigate they sprayed the house with luminol which proved he had murdered his wife. Movie is about 20 years old.

"And Never Let Her Go"... Mark Harmon.
In a Child's Name... Valerie Bertonelli
Shattered Vows...