
A prototype organism engineered to thrive on Mars and become a lethal weapon on Earth is unleashed when a space shuttle crashes, releasing the resilient creature. Only a Defense Department agent and the female scientist who designed the organism stand between it and disaster.
Does Project Viper have end credit scenes?
No!
Project Viper does not have end credit scenes. You can leave when the credits roll.
Explore the complete cast of Project Viper, including both lead and supporting actors. Learn who plays each character, discover their past roles and achievements, and find out what makes this ensemble cast stand out in the world of film and television.

James Cromwell
MP 1

John Beck
Simpkins

Tim Thomerson
Sheriff Morgan

GiGi Erneta
Girl by Pool (uncredited)

Theresa Russell
Dr. Nancy Burnham

Patrick Muldoon
Mike Connors

Curtis Armstrong
Keach

Redmond Gleeson
Local Man

Andy Milder
Chambers (Head of NASA)

Daniel Quinn
Alan Stanton

Adam Lieberman
Crewman Terrance

Todd Kimsey
Crewman Mitchell

Billy Keane
Steve Elkins

Joe Sabatino
MP 2

Rene Rivera
Gonzales

Lorissa McComas
Chelsea

Lydie Denier
Diane Cafferty

William Langlois
General Cartwright

Eric James Virgets
Deputy Ferguson

Rod McCary
Dr. Shoup

Tamara Davies
Sid Bream

Steve Purnick
Mr. Norton

Joe Avalon
Sgt. Tulley

Dwayne Shattuck
Crewman Miller
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Challenge your knowledge of Project Viper with this fun and interactive movie quiz. Test yourself on key plot points, iconic characters, hidden details, and memorable moments to see how well you really know the film.
What is the name of the experimental hybrid prototype featured in the film?
Cobra
Viper
Mamba
Python
Show hint
Read the complete plot summary of Project Viper, including all major events, twists, and the full ending explained in detail. Explore key characters, themes, hidden meanings, and everything you need to understand the story from beginning to end.
On a routine Space Shuttle mission, the Olympus carries a shocking payload: Project Viper, an experimental hybrid that fuses human genes with computer chips to adapt to any environment, with Mars as its ultimate test. As the crew prepares to launch the first prototype, a sudden power glitch ruptures the containment and releases Viper into the open. The result is catastrophic: the crew is killed, and the Secretary of Defense wastes no time ordering the second prototype destroyed, kept under tight guard at a NovaGen Science facility. To carry out the order, he calls in Mike Connors, a special agent who knows this project inside and out.
Meanwhile, at NovaGen, project leader Dr. Nancy Burnham and her team—Steve Elkins, Sid Bream, and Alan Stanton—are toasting a breakthrough that could redefine genetic engineering. The arrival of their colleague Diane Cafferty is imminent, but tragedy strikes before she can join the celebration: a rogue police officer, intent on stealing the second Viper, murders guards and technicians and grabs the prototype. The thief’s accomplice and the stolen container vanish into the night, leaving Connors to pick up the trail.
Connors pursues the thieves into a dense forest, while Burnham and her crew race to understand what their creation has become. Though the rogue officer is killed, his wife escapes with Viper’s container, and the pair soon hijack a small cargo plane, heading toward a hidden base. A brutal engine failure sends the aircraft crashing into the forest about 50 miles north of the Mexican border, near Lago Nogales. The impact splinters the container, and Viper invades the environment, leaving a grisly wake of disappearances and petrifying evidence of its appetite.
Back at the crash site, Connors, Burnham, and a wary local Sheriff Morgan begin to trace Viper’s trail through Lago Nogales and beyond. Tests reveal a chilling pattern: Viper is drawn to uranium-contaminated water, concentrating its presence near an abandoned mine. The investigators realize they’re dealing not with a mindless predator but with a creature that can exploit specific environmental weak points. In a decisive move, Connors orders an electromagnetic pulse bomb to neutralize the threat, even as Viper surges toward the town’s water supply.
The tension erupts when Connors confronts Viper at a police station and a sharp, brutal confrontation ensues. In a startling confession, Steve Elkins reveals that he deliberately programmed Viper to kill humans, hoping to rid himself of the moral weight of Burnham, Stanton, and others who stood in the project’s way. The revelation reframes the stakes: the threat isn’t just the creature but the human ambition behind it. In the ensuing clash, Connors defeats Elkins, but the victory is tempered by loss as the mission’s collateral damage unfolds.
With Elkins defeated and Burnham by his side, Connors and the sheriff work to contain the crisis. They lure Viper away from populated areas and drive the creature to the heart of the mine, where the EMP device detonates. The blast destroys Viper and halts its rampage, allowing Burnham and Connors to escape relatively unharmed, though the sheriff is not so fortunate. The aftermath reveals a sobering consequence: the first prototype Viper aboard the Olympus re-enters Earth’s atmosphere and crashes into the Pacific Ocean, setting the stage for further reflection on humanity’s reach and the responsibilities that accompany it.
The mission’s fallout extends beyond the immediate danger. NovaGen and NASA confront the implications of their work and the thin line between innovation and risk, while Connors, Burnham, and those who survived must reckon with what it means to wield a technology that can redefine life itself. In the quiet that follows, the lingering question remains: when power comes with a prototype, who truly guards whom, and at what cost to the world they seek to save?
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