The passengers on a cruise ship are seized by panic when a deadly virus begins killing off passengers and crew.
Claude Akins
as Oscar Billingham
Patty Duke
as Norma Walsh
Len Birman
as Marvin Luck
Frank Converse
as Dr. Paul Jeffries
William Daniels
as Marshall Snowden
George Hamilton
as Glenn Lyle
Murray Hamilton
as Dr. Ned Folger
Jane Seymour
as Jan
Michael Lerner
as Dr. Berglund
Susan Howard
as Julie Clayton
Beatrice Straight
as Beatrice Richmond
Thalmus Rasulala
as Dr. Alvarez