See No Evil (1971)

Mia Farrow plays a woman who recently lost her sight in an accident and is just back from rehabilitation. She barely has time to acclimate herself before a killer in distinctive boots has dispatched her family. Not that she'd notice...at least not right away.

I saw this a long time ago -- probably as a teen -- and I'd remembered it as completely terrifying. And while it still got me a couple of times, it seems impossible that I'd ever lost sleep over it. Farrow is quite good at playing blind, though.

C+