Detective Allan Pinkerton, working for the Union, becomes obsessed with Southern socialite Rose O'Neal Greenhow, a spy for the Confederacy.
Christopher Reeve
as Allan Pinkerton
Madolyn Smith Osborne
as Rose O'Neil Greenhow
Granville Van Dusen
as Tom
Kevin McCarthy
as Senator Henry Wilson
Carrie Snodgress
as Joan Pinkerton
Haynes Brooke
as Lieutenant Lawrence Nevins
Jeff Corey
as James Buchanan
Wilbur Fitzgerald
as New York Times Reporter
Mert Hatfield
as Union Jailer
