With a body in the river and a series of spacesuit failures, Nathan Spring is unconvinced by the machine's verdict of accidental death. And instinct is telling him to pursue it even if it means laying his own life on the line.

""Lee Jones has been dealt with. You are next.""

Somewhere out there is a killer. Can Nathan Spring, recently appointed head of the International Space Police Force, pre-empt his deadly messenger?

There has been an explosion at the chemical plant, disaster in the Channel Tunnel and now there's a terrorist threat. The only clue is a couple of lines of obscure poetry. Can Spring and Theroux unravel the secret in time?

When a mystery kidnapper steals three frozen embryos from Moonbase, the crime seems motiveless. Then their mother turns out to be the wife of an infamous arms dealer with a list of henchmen and enemies a mile long.

With the ransom deadline approaching, Nathan is finding out what it's really like to race against time to save lives.

The stress of deep space seems to be taking its toll at last with the onset of more and more maintenance errors. The trouble is, they've co-incided with the arrival of the safety controller and a visiting psychiatrist! As the chaos escalates, the safety of the entire moonbase is at stake.