THE MUTATION (2021) Reviews of giant mutant rat movie



‘The search for a cure created a monster’

The Mutation is a 2021 British science fiction horror film about a mutated giant rat that has been let loose in an American city.

Written, produced and directed by Scott Jeffrey (Cannibal Troll; Bad Nun: Deadly VowsDon’t SpeakCupidClownDoll).

The movie stars Sarah T. Cohen (HellKat; Cupid; Witches of Amityville Academy), Megan Purvis (Rise of the Mummy; The Young Cannibals; Th’dread Rattlin’), Abi Casson Thompson (HellKat; Rise of the Mummy; The Candy Witch) and Derek Nelson (A Werewolf in England; Pandamonium; Vampire Virus).


“For most of The Mutation, the killer creature is a man in a costume looking like the rabbit from Donnie Darko after a $50 rock of crack. It jumps on people and flops all over them. This will be the first and last element of the film many viewers will notice. However, more adept B-movie watchers will see how Jeffrey obeys the golden rule of successful trash cinema: don’t play anything for laughs.” Film Threat

The Mutation gives the impression of having a bigger budget than Jeffrey usually gets to play with, the extra monies seemingly going in the direction of practical gore effects and a decent fight choreographer […] While there are a few dull stretches and flat performances, overall The Mutation is a blood-splattered step in the right direction for Jeffrey…” Gavcrimson

“It has certain elements it replicates from ’80s classics where the use of smoke and colored lights was overused to give it some tension to the scenes that included more action sequences or for its creepy settings when you knew the villain would pop out. It also has some gore during the kills— but not as much as one could hope for to save this film from a treacherous fate.” 3/10, Horror Buzz

“With loads of atmospherically lit night shots and a plot that never takes itself too seriously, The Mutation has the feel of some of Full Moon’s better ’80s and early ’90s films. The rat costume especially looks like it came from their costume department. While many of Jeffrey’s films have a bit of action at the start and end with endless talk in between he avoids that trap here.” Voices from the Balcony

Release date:

The Mutation will be released by Uncork’d Entertainment on DVD and Digital on October 5, 2021.

Cast and characters:

Sarah T. Cohen … Tara
Megan Purvis … Sergeant Chambers
Abi Casson Thompson … Julie Smith
Derek Nelson … Rat
Amanda-Jade Tyler … Doctor Linda Rowe
Andrew Rolfe … Sargeant McKenna
Ricardo Freitas … Allen Marsh
James Robertson … Norton
Mya Brown … Suzy
Ailís Smith … Monica
Tom Taplin … Jay
Zoe Purdy … Hannah
Jodie Bennet … Jenna
Nick Danan … Peter
Barbara Dabson … News reporter

Filming locations:

Two Kingdom Street, Paddington, London, W2, England

Fun facts:

Formerly known as Rats Reborn


MOVIES and MANIA says:

The Mutation has a well-worn plot about a mad scientist creating a monster that then goes on a rampage. It’s obviously nothing new and there is reasonable fun to be had it not been severely hampered by a massive audio handicap.

The film’s painfully obvious Brits-as-Yanks set-up will sit uncomfortably with both UK and US audiences (a practice that runs as far back as Slaughter High in 1986). The shameless fakery is laughable and insulting to all concerned but especially the cast who have to deliver their dialogue with a faux Transatlantic drawl.

There are plenty of well-lit atmospheric scenes but the bland direction consists of basic coverage shots that emphasise the shoot-fast-let’s-go approach to this production. Editing is perfunctory at best. Towards the end, there’s an enjoyably gory attack scene in a restaurant but it’s not enough to save the film as a whole.

Despite an amusingly awful giant CGI rat at the climax – which, inexplicably, isn’t hairy like its human-sized version – anyone watching this overly hairy rat turd of a movie will probably be disappointed.

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