Movies Like I, Monster
If you loved I, Monster's Horror and Science Fiction storytelling, these films deliver a similar experience — carefully selected for tone, themes, and emotional depth. Each pick includes where to watch it right now.
★ Top Picks

Dr. Jekyll and Mr. Hyde
Dr. Henry Jekyll believes that there are two distinct sides to men - a good and an evil side. He believes that by separating the two, man can become liberated. He succeeds in his experiments with chemicals to accomplish this and transforms into Hyde to commit horrendous crimes. When he discontinues use of the drug, it is already too late.

Dr. Jekyll & Sister Hyde
In foggy London Dr Jekyll experiments on newly deceased women determined to discover an elixir for immortal life. Success enables his spectacular transformation into the beautiful but psychotic Sister Hyde who stalks the dark alleys of Whitechapel for young, innocent, female victims, ensuring continuation of the bloodstained research. With each transformation Sister Hyde becomes the more dominant personality, determined to eventually suppress the frail, ineffectual Dr Jekyll forever.

The Two Faces of Dr. Jekyll
After a series of scientific experiments directed towards freeing the inner man and controlling human personalities, the kindly, generous Dr Henry Jekyll succeeds in freeing his own alter ego, Edward Hyde, a sadistic, evil creature whose pleasure is murder.

Dr. Jekyll and Mr. Hyde
Dr. Jekyll believes good and evil exist in everyone and creates a potion that allows his evil side, Mr. Hyde, to come to the fore. He faces horrible consequences when he lets his dark side run amok.

Sleepwalkers
Charles Brady and his mother, Mary, are the last of a dying breed whose needs are not of this world. They are Sleepwalkers - able to stay alive only by feeding on the life-force of the innocent, but destined to roam the earth, avoiding discovery while searching for their next victim. That search takes them to the sleepy little town of Travis, Indiana, where beautiful teenager Tanya Robertson is about to become an unwilling pawn in their nightmarish fight for survival.

Piglet
On Kate's 21st birthday camping trip, her friends encounter Piglet, a monstrous human-pig hybrid who brutally murders one of them. They uncover Piglet's origins and Kate must confront her past to survive the relentless killer.

The Invisible Man
After experimenting on himself and becoming invisible, scientist Jack Griffin, now aggressive due to the drug's effects, seeks a way to reverse the experiment at any cost.

The Horror of Frankenstein
Brilliant but arrogant scientist Victor Frankenstein builds a man from spare body parts, only for the monster to come alive and wreak havoc.
More Movies Like I, Monster

Frankenstein
Dr. Victor Frankenstein, a brilliant but egotistical scientist, brings a creature to life in a monstrous experiment that ultimately leads to the undoing of both the creator and his tragic creation.

Assimilate
Three friends making a web series about their town discover that their neighbors are being killed and replaced by creatures who are perfect copies of their victims.

Twice-Told Tales
3 horror stories based on the writings of Nathaniel Hawthorne. In the 1st story titled "Dr. Heidegger's Experiment", Heidegger attempts to restore the youth of three elderly friends. In "Rappaccini's Daughter", a demented father is innoculating his daughter with poison so she may never leave her garden of poisonous plants. In the final story "The House of the Seven Gables", The Pyncheon family suffers from a hundred year old curse and while in the midst of arguing over inheritance, a stranger arrives.

Look Away
A timid and socially alienated 17-year-old high school student's life is turned upside down when she switches places with her sinister mirror image.

Frankenstein Must Be Destroyed
Blackmailing a young couple to assist with his horrific experiments the Baron, desperate for vital medical data, abducts a man from an insane asylum. On route the abductee dies and the Baron and his assistant transplant his brain into a corpse. The creature is tormented by a trapped soul in an alien shell and, after a visit to his wife who violently rejects his monstrous form, the creature wreaks his revenge on the perpetrator of his misery: Baron Frankenstein.

Werewolves
A year after a supermoon’s light activated a dormant gene, transforming humans into bloodthirsty werewolves and causing nearly a billion deaths, the nightmare resurfaces as the supermoon rises again. Two scientists attempt to stop the mutation but fail and must now struggle to reach one of their family homes.

The Evil of Frankenstein
Once hounded from his castle by outraged villagers for creating a monstrous living being, Baron Frankenstein returns to Karlstaad. High in the mountains they stumble on the body of the creature, perfectly preserved in the ice. He is brought back to life with the help of the hypnotist Zoltan who now controls the creature. Can Frankenstein break Zoltan's hypnotic spell that incites the monster to commit these horrific murders or will Zoltan induce the creature to destroy its creator?

Never Let Go
As an evil takes over the world beyond their front doorstep, the only protection for a mother and her twin sons is their house and their family’s protective bond.

The Invisible Man
When Cecilia's abusive ex takes his own life and leaves her his fortune, she suspects his death was a hoax. As a series of coincidences turn lethal, Cecilia works to prove that she is being hunted by someone nobody can see.

The Howling
After a bizarre and near fatal encounter with a serial killer, a newswoman is sent to a rehabilitation center whose inhabitants may not be what they seem.

Victor Frankenstein
Eccentric scientist Victor Von Frankenstein creates a grotesque creature in an unorthodox scientific experiment.
Why These Movies Are Similar
These recommendations share core qualities with I, Monster (1971): Horror and Science Fiction themes, similar narrative structure, and comparable emotional depth. NoBadPicks uses a combination of TMDB collaborative filtering, genre matching, and AI analysis to surface films most likely to resonate with fans of I, Monster.
See full details for I, Monster (1971)
