Deadly Lodestone

Deadly Lodestone is the 17th episode in the series. It aired January 19, 1969.

Plot
Inspector Kobick, an officer with the police's Special Investigations Department (SID), develops a technique to track the humans using a scanner to detect and track a metal unique only to Earth. To counter the device, Steve has everyone get rid of all articles containing the metal, but Dan reveals he has a surgical pin in his leg made of the unique material. Steve believes the group's only chance to evade capture is to have the pin surgically removed. He seeks out Dr. Brule, the giant surgeon who had saved Barry's life previously to do the operation, but learns the doctor is in prison. The only chance to reach him lies in contacting his assistant, Nurse Helg, whose actual loyalty may be to Kobick.

Cast

 * Gary Conway as Captain Steve Burton
 * Don Marshall as Dan Erickson
 * Heather Young as Betty Hamilton
 * Don Matheson as Mark Wilson
 * Deanna Lund as Valerie Scott
 * Stefan Arngrim as Barry Lockridge
 * Kurt Kasznar as Alexander Fitzhugh

Supporting Cast

 * Paul Fix as Dr. Brule
 * Robert Emhardt as Secretary
 * Bill Fletcher as Sergeant Karf
 * Kevin Hagen as Inspector Dobbs Kobick
 * Sheila Allen as Nurse Helg
 * Gene Dynarski as Warden Barmak

Notes & Trivia

 * This was the first episode to feature Kevin Hagen as Inspector Kobick.