The Manhattan Project (1986)

Researcher John Mathewson (John Lithgow) tried to ingratiate himself with Paul Stephens (Christopher Collet), the science-whiz son of his new girlfriend (Jill Eikenberry), through a cook's tour of his facility. Unfortunately, Paul recognized some weapons-grade plutonium... and when he opts to borrow some for this year's school fair project A bomb he winds up the object of a government manhunt. Marshall Brickman's thriller co-stars Cynthia Nixon, Robert Sean Leonard. 117 min.