At a tight 86 minutes, the film is visually compelling and makes sound use of its lead actors -- a solid debut for Winbush and ultimate victory for “Greenlight.”

“Gray Matter” is by-the-numbers, by-committee product.

Nothing about the film is particularly memorable beyond the behind-the-camera real-life story that spawned it.

Comes across like something retrieved from Stephen King’s wastebasket given bargain-basement “Twilight Zone” treatment.