一名FBI探员接手了三起与死者无关的案件，以追查凶手。
Broderick Crawford
John 'Ripley
Ruth Roman
Kate Martell
Martha Hyer
Connie Anderson
Marisa Pavan
Julie Angelino
Max Showalter
Dave Millson
Kenneth Tobey
Zack Stewart
Gene Reynolds
Vince Angelino
William Johnstone
FBI Chief Frank Pace
Harlan Warde
Greg Barker
Jay Adler
Uncle Max - aka Charles Martell
Claude Akins
Matty Pavelich
Suzanne Alexander
Brenda Ralles
Myra Marsh
Mrs. Downes
Joe Bassett
Joe Walpo - aka Joe Allen
