Summary A Communist Bloc spy turns up dead from a heart attack, putting Erskine and Colby on the trail of an espionage ring. The group's target is four scientists. The spies plan to exert enough pressure on one of them to gain access to a top secret project. Erskine goes undercover as a security official at the institute where the scientists work.
Directed : Unknown
Written : Unknown
Stars : Efrem Zimbalist Jr. William Reynolds Philip Abbott Stephen Brooks
Genres : Mystery Crime Drama
Release date : Sep 21, 1968
Countries of origin : United States
Language : English
Filming locations : Big Bear Lake, Big Bear Valley, San Bernardino National Forest, California, USA
Production companies : Warner Bros. Warner Bros. Television Quinn Martin Productions (QM)
Summary A Communist Bloc spy turns up dead from a heart attack, putting Erskine and Colby on the trail of an espionage ring. The group's target is four scientists. The spies plan to exert enough pressure on one of them to gain access to a top secret project. Erskine goes undercover as a security official at the institute where the scientists work.
Genres : Mystery Crime Drama
Release date : Sep 21, 1968
Countries of origin : United States
Language : English
Filming locations : Big Bear Lake, Big Bear Valley, San Bernardino National Forest, California, USA
Production companies : Warner Bros. Warner Bros. Television Quinn Martin Productions (QM)
