Shadowslayers

When doppelgangers start appearing in Oxford, Union Jack agents Ignatius and Indigo find themselves on another cosmic quest, one they didn't set out to investigate.

Drawn into the search for the elusive and dangerous Book of Shadows, they find themselves traveling across the cosmos once again, racing against other versions of themselves, and visiting the Oracle to be given prophecies of terrible destruction that will engulf the cosmos in darkness. Only these two heroes—or their doubles—can ...