Metacritic reviews

Right from its stylish and violently kinetic opening, Frankenstein Must Be Destroyed establishes itself as one of the finest of the seven entries in Hammer’s Frankenstein cycle.

Fisher taps a rich vein of Romanticism here, making this the high point of a series that afterwards degenerated into the sloppy self-parody of Jimmy Sangster's The Horror of Frankenstein.

This well-done Hammer horror film features a thoughtful screenplay that finally injects some compassion and intelligence into the monster. One of director Fisher's best.

The film is a good-enough example of its low-key type, with artwork rather better than usual (less obvious backcloths, etc.), a minimum of artless dialog, good lensing by Arthur Grant and a solid all round cast.

Shallower than the level of vermouth in a Claude Rains Martini, FMBD nonetheless has a wonderful breadth of characterization, delightful thrills, and philosophical speculations to boot. [30 Apr 1970, p.60]