

“Paul Stevens' high school science project has gotten a little out of hand. He just built an atomic bomb. Now he's got 11 hours to make sure it doesn't work.”
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The Manhattan Project (1986) – Official Trailer, Cast & Details
The Manhattan Project at a Glance
The Manhattan Project is a 1986 science fiction and thriller film helmed by Marshall Brickman, with a cast led by John Lithgow, Christopher Collet and Cynthia Nixon. It runs 1 hour 58 minutes and was released on June 13, 1986. The Manhattan Project holds an average TMDB user score of 6.2/10 from 121 votes and is rated PG-13 in the United States.
Watch the official The Manhattan Project trailer for free in 123Movies below.

1080p HD • Free YouTube Stream
Storyline & Synopsis
A gifted high school student steals plutonium from the secret nuclear weapons facility in his home town in order to construct his own nuclear bomb, win a national science fair, and expose the government's secrets.
Where “The Manhattan Project” Fits in the 123Movies Catalog

John Lithgow
John Mathewson

Christopher Collet
Paul Stephens

Cynthia Nixon
Jenny Anderman

Jill Eikenberry
Elizabeth Stephens

John Mahoney
Lt. Col. Conroy

Richard Jenkins
Radiation Controls Officer

Sully Boyar
Night Guard

Timothy Carhart
Relief Guard

Gregg Edelman
Science Teacher

JD Cullum
Eccles (as John David Cullum)
Abraham Unger
Roland (as Abe Unger)

Robert Sean Leonard
Max
Frequently Asked Questions About The Manhattan Project
What is the release date of The Manhattan Project?
The Manhattan Project was released on June 13, 1986.
How long is The Manhattan Project?
The Manhattan Project runs 1 hour 58 minutes (118 minutes).
Who is in the cast of The Manhattan Project?
The Manhattan Project stars John Lithgow as John Mathewson, Christopher Collet as Paul Stephens, Cynthia Nixon as Jenny Anderman and Jill Eikenberry as Elizabeth Stephens. The cast also includes John Mahoney, Richard Jenkins, Sully Boyar and Timothy Carhart.
Who directed The Manhattan Project?
The Manhattan Project was directed by Marshall Brickman. The screenplay is credited to Marshall Brickman and Thomas Baum.
What kind of movie is The Manhattan Project?
The Manhattan Project is listed on TMDB as a mix of science fiction and thriller.
What is The Manhattan Project rated?
The Manhattan Project is rated PG-13 in the United States. On TMDB it has an average user score of 6.2/10 from 121 votes.
Where can I watch the The Manhattan Project trailer?
You can watch the trailer for The Manhattan Project, "The Manhattan Project (1986) Trailer", for free on this 123Movies page. It is embedded from YouTube.
What should I watch if I liked The Manhattan Project?
Movies TMDB recommends alongside The Manhattan Project include The Invisible Man (1933), Disclosure Day (2026), I Am Number Four (2011), The Saint (1997) and WarGames (1983).
Can I stream the full movie of The Manhattan Project on 123Movies?
No. 123Movies only shows official trailers and title information. Full movies are not hosted or linked on this site.

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