Ondskans redskap was released in the year 1977。Ondskans redskap is also called as The Sentinel, Vartija, Sentinelle des maudits, Sentinel, Ondskapens redskap, Hexensabbat, Centinela。

A fashion model moves into a house inhabited (on the top floor) by a blind priest. She begins having strange physical problems, has trouble sleeping at night, and has some nasty flashbacks of her attempted suicide. She complains to the real estate agent of the noise caused by her strange neighbors, but finds out that the house is only occupied by the priest and herself, and ultimately discovers that she has been put in the house for a reason.

Ondskans redskap actors and actresses include Ava Gardner, Beverly D'Angelo, Burgess Meredith, Christopher Walken, Eli Wallach, Jeff Goldblum, Jerry Orbach, Martin Balsam, Sylvia Miles, Tom Berenger。