Wheels of fire are spinning out of control, and Tom and his sister, Sandra, are feeling the heat. He's developed a jet-powered cycle...she's designed a near-perfect flame-reflective suit, which renders it's wearer invisible...and now both inventions have fallen into the wrong hands!

Some calling himself Captain Invisible has stolen the devices in order to mete out vigilante justice in the streets. But he is unaware of their side effects--and of the risk he faces. Worse yet, if the inventions end up on the wrong side of the law, they could be used to unleash a criminal firestorm of disastrous proportions.
(from the publisher)