Told to relax after recovering from being shot in Irania, Probe was blackmailed in to boarding a flying boat with an arms dealer who wanted to find out the secrets of hyperpower. Probe escaped, killing Brandt in the process.
- Probe aka M.A.C.H.1 is government agent imbued with extraordinary physical power and a computer embedded in his brain.
- Karen is a girl that Probe is spending time with on holiday in the West Indies..
- Otto Brandt is an illegal weapons dealer. He coerces Probe into joining him in his flying boat by threatening the lives of other holidaymakers. He is killed when his plane collides with a truck..
- West Indies