🎯 Quick Overview
Trailer
- Director: Bernard L. Kowalski
- Genre: Horror, Sci-Fi
- Release year: 1973
- Runtime (length): 1h 39min
- IMDb rating: 5.4/10 (4.3K votes)
- Rotten Tomatoes: 29%
😅 Plot Summary – Badly Explained
A mad scientist believes turning college students into snakes is the next evolutionary leap, so he starts injecting his new assistant with transformative reptile juice.
🍿 Sssssss: Detailed Plot Synopsis
A New Lab Assistant for Dr. Stoner
The film introduces David Blake, a college student seeking employment, who is hired by Dr. Carl Stoner, a respected herpetologist. David becomes Dr. Stoner’s new lab assistant, assisting with his extensive research and experiments involving snakes. Dr. Stoner’s previous assistant has mysteriously disappeared, setting an uneasy tone.

Mysterious Injections and Growing Unease
David begins working closely with Dr. Stoner and his daughter, Kristina, in their isolated home laboratory. Dr. Stoner insists on giving David daily injections, claiming they are inoculations to build immunity against snake venom. However, David soon starts experiencing strange physical symptoms, including shedding skin and a greenish tint to his complexion, leading to growing concern.

Romance and Rising Suspicion
Amidst the scientific work, David develops a romantic relationship with Kristina. As David’s condition worsens and his symptoms become more pronounced, Kristina begins to suspect her father is hiding the true nature of his experiments. Meanwhile, Dr. Stoner’s academic rival and the local sheriff also become increasingly suspicious of the doctor’s activities and the disappearance of his former assistant.

Deadly Experiments and Desperate Measures
Dr. Stoner, driven by a misguided belief that humanity is doomed and that evolution into a King Cobra is the only path to survival, is secretly using David as a test subject for a serum designed to transform humans into snakes. He eliminates anyone who gets too close to discovering his horrifying secret, including a nosy professor and a bully student who harms his pet snake.

⚠️ Spoilers and Ending Explained
🎬 Cast & Characters
- Dr. Carl Stoner (Strother Martin): A mad scientist obsessed with transforming humans into snakes as the next evolutionary step.
- David Blake (Dirk Benedict): A college student hired as Dr. Stoner’s lab assistant, unknowingly becoming the subject of his dangerous experiments.
- Kristina Stoner (Heather Menzies-Urich): Dr. Stoner’s daughter who works in his lab, falls for David, and grows suspicious of her father’s research.
- Dr. Ken Daniels (Richard B. Shull): A skeptical university colleague who questions Dr. Stoner’s ethics and funding.
- Sheriff Dale Hardison (Jack Ging): The local sheriff investigating missing persons, leading him to Dr. Stoner’s isolated lab.
💬 Memorable Quotes
- Dr. Carl Stoner: “Man is obsolete. He’s outlived his time. He’s destroying himself and his world.” – Dr. Stoner explains his twisted philosophy, believing that turning humans into snakes is the next step in evolution and necessary for survival.
- Dr. Carl Stoner: “Look sober, Harry!” – Dr. Stoner speaks fondly to his pet snake, Harry, highlighting his unusual and obsessive relationship with his reptiles.
- Kristina Stoner: “No! No! DAVID!” – Kristina screams in horror during the film’s abrupt and tragic climax as she witnesses David’s fate.
💰Box Office
- Budget: $1,300,000
- Domestic Gross: $1,250,000
- Worldwide Gross: None
💥 Sssssss Reviews
Personal Review
Okay, so I finally watched Sssssss, and wow, what a wild ride! I went in expecting pure cheese, and while there’s definitely some of that (Dr. Stoner’s name alone!), it actually hooked me more than I thought it would. I loved seeing young Dirk Benedict before The A-Team; he really sells the slow terror of realizing something is terribly wrong. Strother Martin is fantastic, swinging between kindly mentor and absolute lunatic with disturbing ease. The real snakes are genuinely unnerving, adding a layer of authenticity that CGI just can’t replicate. I also got a kick out of the famously censored skinny-dipping scene – the fake leaves were hilariously distracting! Despite its flaws and that sudden ending, I totally get why this has a cult following. It’s weird, it’s charming, and it’s unforgettable.
- Who would enjoy:
- “Fans of classic 1970s horror and sci-fi”
- “Viewers who appreciate ‘mad scientist’ film tropes”
- “Enthusiasts of creature features”
- “Those interested in films featuring real animal interactions (specifically snakes)”
- “Fans of actors like Strother Martin or Dirk Benedict”
- Content warnings ⚠:
- “Features real snakes in potentially unsettling situations”
- “Depicts a human transformation (dated makeup effects)”
- “Includes scenes of animal conflict/death”
- “Contains brief, blurred nudity (censored in some versions)”
- “Mild violence”
Professional Reviews
- Flicker & Reel: “Sssssss delivers quintessential 70s creature feature charm, anchored by a deliciously unhinged performance from Strother Martin. While the plot’s scientific logic is laughable and the pacing occasionally slithers too slowly, the commitment from the cast (including a young Dirk Benedict) and the impressive real snake footage provide a potent dose of B-movie fun. A worthy watch for genre aficionados.
- The Daily Grindhouse: “More silly than scary, Sssssss is a fascinatingly flawed deep dive into reptilian transformation. The makeup effects, while dated, offer genuinely creepy moments. However, a meandering script, some questionable character decisions (looking at you, naive assistant!), and an abruptly truncated ending prevent it from reaching classic status. Still, it’s an engaging oddity from the era.
Audience Reactions
People loved the use of real snakes and Strother Martin’s performance.: Viewers appreciate the film’s unique premise, its 70s B-movie atmosphere, and the surprisingly effective practical effects for its time, often noting its rewatchability as a campy classic.
Overall Consensus: A cult classic praised for its bizarre plot, dedicated performances, and memorable use of live snakes, though criticized for pacing and a weak ending.
Awards
🛠️ Behind the Scenes
- “All the venomous snakes featured in the film were authentic, and cast members reportedly had to interact with them under hazardous conditions. The opening title card thanks the cast and crew for their courageous efforts.”
- “Only in the specific shot where Strother Martin grabs the king cobra’s head during the show was a puppet snake used for safety.”
- “Executive producers Richard D. Zanuck and David Brown went on to produce Steven Spielberg’s blockbuster ‘Jaws’ shortly after this film.”
- “The acclaimed makeup effects, particularly the human-to-snake transformation stages, were created by John Chambers, who won an Academy Award for his work on ‘Planet of the Apes’ (1968).”
- “The UK video version of the film was cut by 27 seconds by the BBFC to heavily edit a scene where a snake fights a mongoose.”
- “The film’s unusual title, ‘Sssssss’ (with seven ‘S’s), was reportedly a marketing decision by Universal Pictures, changed from the original title ‘SSSSNAKE’, though some reviews speculate it may have negatively impacted the box office.”
🖥️ How to Watch Sssssss?
As of the latest information, the classic 1973 horror film “Sssssss” is not consistently available on major subscription streaming services. It can often be found for rent or purchase digitally on platforms like Amazon Prime Video, Apple TV, and Vudu. Check these platforms for current availability and pricing.

🎥 Similar Movies
If you enjoyed Sssssss, you might like these similar films:
- The Reptile (1966): Features a similar theme of a human transforming into a reptile due to a curse or scientific experiment, rooted in classic horror traditions.
- The Fly (1958): A classic sci-fi horror film centered on a scientist’s experiment gone wrong that results in a horrific human-animal transformation.
- The Boy Who Cried Werewolf (1973): This film was famously the other half of the theatrical double feature bill with ‘Sssssss’ in 1973.
- The Fly (1986): A renowned modern take on body horror and human-animal transformation, featuring groundbreaking practical effects for its time.
- Attack of the Giant Leeches (1959): Directed by Bernard L. Kowalski, this is a quintessential low-budget B-movie creature feature known for its campy appeal.
🛒 Sssssss Related Products
- SSSSSSS Collector’s Edition Blu-ray: Experience the classic creature feature in high definition with bonus features like behind-the-scenes footage on working with snakes and interviews with the cast.
- King Cobra Movie Poster T-Shirt: A stylish t-shirt featuring the iconic original movie poster art of Sssssss, perfect for fans of vintage horror.
- The World of Reptiles: A Comprehensive Guide: An educational book exploring the fascinating world of snakes, lizards, and other reptiles, detailing their biology, behavior, and diversity.
- Vintage Sci-Fi Horror Movie Collection (DVD): A multi-film DVD set featuring classic B-grade science fiction and horror movies from the 1950s-1970s, capturing the era’s unique cinematic style.
🎧 Soundtrack
Sssssss features a captivating soundtrack that enhances the movie’s atmosphere and emotional impact. Here are some notable tracks:
- “Main Title” – performed by Patrick Williams
- “Laboratory Experiments” – performed by Patrick Williams
- “Transformation Suite” – performed by Patrick Williams
- “The King Cobra’s Dance” – performed by Patrick Williams
You can find the complete soundtrack on Amazon Music and Apple Music.
🤨 FAQ
“Sssssss” is a 1973 horror film about a mad scientist, Dr. Carl Stoner, who experiments with a serum designed to transform humans into King Cobras. He hires a college student, David Blake, as his lab assistant and secretly uses him as a test subject, leading to a terrifying transformation.
Yes, a title card at the beginning of the film states that all reptiles featured were real. Cast and crew reportedly worked under hazardous conditions, including interacting with potentially venomous snakes like King Cobras.
The film stars Strother Martin as the mad scientist Dr. Carl Stoner, Dirk Benedict as his ill-fated assistant David Blake, and Heather Menzies as Kristina Stoner. Reb Brown also appears in an early role.
SPOILER ALERT: At the end of “Sssssss”, David’s transformation into a King Cobra is complete. He kills Dr. Stoner, who is then found dead by Kristina and the police. In the final moments, a mongoose attacks the David/Cobra, and the police shoot the snake as Kristina screams in horror.
The title “Sssssss” (often shown with seven ‘S’s) mimics the hissing sound made by snakes. While originally titled “SSSSNAKE”, the production company reportedly changed it to the more stylized “Sssssss” for its release.
🔥 Bonus Content
This man is miserable. #shorts
This insane movie concept went viral! See why over a million people watched this short clip about a scientist turning a guy into a snake – it’s exactly what it sounds like!
Grindhouse Of Horrors: Ssssss
Curious what people actually thought of ‘Sssssss’? This review from a ‘Grindhouse Of Horrors’ channel gives you a fun, critical take on the bizarre premise and whether it holds up.
This sick scientist uses snake genes to turn people into snakes.
Want the full rundown of the mad scientist’s plan and how exactly the transformation happens in ‘Sssssss’? This recap explains the whole wild plot, and honestly, it’s a trip!
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