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The Bionic Wiki
“Deadly Countdown”

S5 E3

Production 47322
Original Airdate: 25 September 1977
Steve and Leah
Written by
Gregory S. Dinallo
Directed by
Cliff Bole
Guest Cast
Guest Star(s)
Jenny Agutter as Dr. Leah Russell
Philip Abbott as Dave McGrath
Mills Watson as Edgar Webster
Lloyd Bochner as Gordon Shanks
Crofton Hardester as Julian Richman
Sherry Hursey as Melissa McGrath
Martin Caidin as G. H. Beck
William Scherer as Ed Pierce
David Morick as Security Guard
Broadcast Order
Season 5
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"Sharks (Part II)" "Deadly Countdown (Part II)"


A group headed by Gordon Shanks has constructed its own missile control center and plans to "kidnap" a rocket when it is launched. The rocket carries the new electronic brain of the U.S. missile defense system, which Shanks will sell to a foreign power. In a bid to gain time, Shanks hires Julian Richman to kill Steve and delay the rocket launching. Richman, with access to the Kennedy Space Center, conceives a scheme to eliminate Steve in the high altitude test chamber. Austin, meanwhile, becomes strongly attracted to the beautiful Dr. Leah Russell, a British scientist who is to accompany him on a mission to link up two space satellites.




  • Martin Caidin, the author of Cyborg, the novel upon which The Six Million Dollar Man is based, appears in this episode as G.H. Beck.


Video Links[]

Steve hits 58 MPH on a treadmill, revealing his bionics to Dr. Russell.