Wings Of Danger is the 17th produced episode and the 15th Broadcast episode of the series Fireball XL5.
The Subterrains plan to use a robot bird, fitted with deadly radium capsules, to kill Steve Zodiac in revenge for the capture of their leader. They send out radio signals from Planet 46, which the crew of XL5 check out. Steve becomes ill and Venus finds a tiny capsule of Radium in him. The robot bird tries again to kill him, but Steve is able to use a stun gun to damage it. A high-pitched noise is heard, the same as the one that came from Planet 46. Steve threatens to use the bird on the Subterrains, but they agree to remain peaceful.