Cool Movie Trivia

Submitted by Ike:

I am looking for a '70s - '80s movie with a plot about a woman killing her husband with the aid of her friend, but later on they begin to see indications that he is still alive, and in the end the husband springs back to life and drowns the wife, and later on we see that we was actualy not dead in the first place but it was the wife's friend that helped him stay alive. I watched it as a child and several scenes flash in my memory:

1) wife and friend see the dead husband in a photo of a school gathering (probably)
2) they were searching the drained pool for his decayed body where I think they supposedly dumped his body in the first place.

The film you're thinking of sounds like "Diabolique." It was made in 1955. There was also a remake with Sharon Stone made in the 90's.