This was a scary movie/mystery... it opens with the husband and wife accidentally killing a delivery guy and hiding the body... then the wife starts seeing the
Delivery guy in different parts of their home... she hears noises which the husband doesn't hear..
I seem to recall a mistress of the husband that is helping the husband drive her
Mad... she may have been posing as the maid/care giver... at the end of the movie the wife has a gun and shoots the 'ghost' aka the
Delivery guy for real.. the husband comes in and wipes the fake scares/makeup off the face of the finally dead delivery guy while the wife stands there not quiet understanding what's going on... I seen this movie around '72-'73 not sure when it was actually made... it's been driving me crazy trying to remember the name of this movie...