I'm trying to find the name of a movie I saw decades ago. I've been going a little nuts trying to remember what it's called. It was about an older woman (a Bette Davis-type character) who hired men (handymen, I think), killed them for their $ and/or pensions, and buried them, each under a pine tree. One very dramatic scene sticks in my mind: a long row of very tall pine trees on her property, which may have been the final scene of the movie. Can anybody help??