Metacritic reviews

Twins of Evil benefits considerably from seasoned performances by a veteran cast that includes genre icon Peter Cushing, Dennis Price, and Kathleen Byron.

Twins Of Evil, like the best of Hammer, is about entering a world of castles, creatures, and torch-wielding mobs, all a little darker and more colorful than expected.

John Hough has given Tudor Gates’ script [based on a characters created by J. Sheridan Le Fanu] a good pace and directed so that audiences can take it as straight horror or as a slight send-up.

It's bawdy, sexy, gory, schlocky, and rollicks along at a cracking pace. [28 Feb 2014]

The rest of the costumed crew, led by that veteran horror hand, Peter Cushing, as the twins' witchhunting uncle, who chases the fanged Count and his retinue, hardly give Twins of Evil a good name.

Some moments of Gothic atmosphere though, don't quite dispel the feeling that much of the plot is devoted to developing situations where its leading ladies might be disrobed for the camera.

Director John Hough, who made his mark in several episodes of the popular television series The Avengers, keeps things moving at a brisk pace and stages the scenes of horror with considerable panache.

Twins loses its center and therefore the nightmarish force of the earlier film. [10 Aug 1972, p.57]