A housewife must harness her newfound paranormal abilities and risk insanity to rescue her son from the possessed doctors and patients of a haunted asylum.

I like this a lot. Tells me everything I need to know while sets up the risks and conflict in an intriguing way. I can visualise it. Good stuff.

"A housewife"
Is there a character journey? Then include her flaw or character weakness in the logline.

"must harness her newfound paranormal abilities"
Interesting to know exactly what her powers can do. Is she simply clairvoyant?

"and risk insanity to"
Consider leaving this out and bringing in the character weakness. That way, there is greater focus on her goal.

"rescue her son from the possessed doctors and patients of a haunted asylum."
Perfect.

All in all a good logline, with a clear goal and clear stakes.

Kyle- excellent logline. What if you deleted "risk insanity", and use a strong adjective to describe the housewife (alcoholic, borderline crazy, whatever). I think the "risk" (whatever it may be) is covered by the "harnessing the newfound paranormal...". I don't think it's necessary to spell it out, but I could be wrong. Curious about the title, though. Good job!