It wasn’t just the twenty years since Danny Brown’s death that made it the hardest case of their careers: it was that the manner of his death was, quite simply, impossible. His body was reduced to ash from his neck to his ankles, in the middle of Soundview Park. His unburned feet were still in his flip-flops. His unburned head was just eighteen inches away, where it had apparently rolled; and his genitals too were unburned. To make matters worse, though it had rained the night before, there were no footprints to be found - anywhere.

Detective Stone keeps an open mind, but his partner, Detective Dehan, is convinced there is a logical, terrestrial explanation for the gruesome murder. The X-Files, after all, exist only in fiction, don’t they? Then they start to hear about the lights in the sky that night, and the threatening visits the FBI paid to the witnesses that saw them – and Detective Dehan starts to wonder: how was Danny Brown killed – and above all, by whom…?

This is a cold case Dehan and Stone might never solve…