Blind Allan (Perkins) returns to his home after a damaging fire that killed his father and tragically maimed his poor sister (Harris).

But soon, the emotionally unstable Allan begins to hear beckoning voices in the deep of night, dark hands reaching for him in the shadows.

Could Allan simply be imagining all the intrigue? Is the unfortunate guy slowly going insane?

Or is there someone very real who wants to make Allan lose any last vestiges of sanity?

Director Harrington's hand is confident here, the suspense is well-crafted; clearly, Perkins and Harris are consummate professionals who are simply a joy to see together in the same vehicle, while the underrecognized Hackett is a welcome face as their helpful neighbor.

An excellent '70s addition to the grand guignol cycle started in the 1960s.