After making a deal with the Time Merchant, Dr. Smith returns to Earth just before the launch of the Jupiter II. If he doesn't get on it, the Jupiter II will crash into an asteroid.
Did You Know?
When Dr. Smith re-materializes in Dr. Chronos' laboratory from Earth, he initially is portrayed by a double wearing a mask used to create his duplicates earlier in the season in Space Destructors. See more
With the alarm sounding at the launch pad, when the guards run past the robot, he is shown hidden behind a blue sheet. In the next camera shot close-up, the robot is covered with a black sheet & a blue sheet. See more
[Chasing Dr. Smith around a chair
There is no time for playing games. I advise you to come peacefully.
Dr. Zachary Smith
[Keeping the chair between the Robot and himself
You'll never take me alive!
Your condition is unimportant. You must be on that ship at blast off!