
This story is about a crusading scientist out to stop nuclear testing who is motivated by scientific fact, conscience and faith. Dr. Alex Carmody (Martin Sheen) is a physicist who becomes convinced that if the U.S. and the U.S.S.R. continue to test nuclear weapons, eventually one of these tests will set off an atomic chain reaction that will obliterate the world. Carmody travels to Portugal where he tries talks to one of the women who in 1911 saw a vision of the Virgin Mary that spoke to her and her two companions about the future. Carmody is certain that the Virgin Mary predicted the very chain reaction he and his co-worker Dr. Kenneth Parrish (Peter Firth) envision. Failing in his attempt to talk to the woman, Carmody then travels to Paris and elsewhere, warning Soviet and American officials that the tests they are planning should be cancelled before they become their last.

as Alex Carmody

as Ken Parrish

as Diane Carmody

as Brian Carmody

as Earl Linton

as Father Joe Ryan

as Jackie Hampton

as Jean-Pierre Belair

as Nathan Weis

as Uri Lopte

as Mikhail S. Petrov

as Jack Tyler

as Jacinta

as Beale

as Grissom

as Assante

as Embassy Clerk

as Nuclear Guard

as Chairman Leclerc

as Hotel Receptionist

as TV Anchorman

as Deena Roberts

as FBI Agent

as First Secretary

as Weis' Secretary

as Researcher

as Peter

as Charlie

as Michael