Adam Farr is able to project his "astral self" to other locales while asleep. This drives his wife crazy and she leaves him. But he has a plan to get her back.

A successful actor has the ability to transport his ‘astral body’ to any place, and does so as part of his job. His wife is uncomfortable with it and leaves him. He uses his powers to try to bring her back. While she is away, she meets another ordinary man and falls in love with him, but she can’t keep it secret from her husband with his special powers. Lots of potential but the story fell flat.

I'm not sure Adam was completely sane. I have a hard time judging him too harshly. I don't approve of murder, even in case of infidelity, but I'm not entirely sure he was consciously aware of what he was doing. Astral projection.