Trapped, with a train bearing down on him, Cal's chances of survival look grim. The cops and criminal gangs are unrelenting - they want him behind bars... or dead.The stakes are getting higher, but all the clues to the Ormond Singularity just lead to more puzzles, and more danger. Thwarted at every turn, it seems Cal has no hope of finding the answers. Is there anyone he can trust?The clock is ticking. Any second could be his last.Callum Ormond has been warned.He has 306 days.The countdown continues...