Arriving at the European space station Charles de Gaulle, Spring struggles to adapt to conditions in low gravity while working to mould his team into an effective force for law enforcement. Before he’s even begun to adjust, he discovers that several crewmembers have recently died, following unforeseen spacesuit malfunction. Although these apparent accidents fall well within the limits of statistical acceptability, Spring’s instincts again lead to him to suspect the work of a saboteur. He decides to expose the culprit by taking a desperate course of action – gambling with his own life…
Elsewhere, Spring’s second-in-command David Theroux investigates an explosion on a distant space freighter that has blocked the craft off course and condemned its two pilots to death, the Star Cops are warned of terrorist attacks by a communications expert based on the Moon, a scientist disappears without trace from the American space station – with the crew denying his very existence – and rumours begin to grow of alien artefacts having been discovered on Mars…