Kingdom of the Serpent, book 1: Jack of Ravens
Mark Chadbourn2006

This is the Ultimate Fantasy: a quest of epic reach spanning the globe under the mythologies of five great cultures - and finally crossing the barrier between life and death. Archaeologist Jack Churchill wakes to find himself in the Iron Age, with the memory of how he got there fading fast. All he knows is that the woman he loves is waiting for him - in the twenty-first century. By shifting to the timelessness Otherworld known as T'ir n'a n'Og he can while away the days, the years, the millennia, until his own era rolls around again ... but nothing is ever that simple. There is a malign intelligence also waiting, and it will do anything it can to prevent Jack's return. In a universe where time and space are meaningless, its tendrils stetch back through the years ... Through Roman times, the Elizabethan age, the Renaissance, Victoria's reign, the Second World War to the Swinging Sixties, the Evil sets its traps to destroy Jack. Mark Chadbourn gives us a high adventure of dazzling sword fights and apocalypic wars in the days leading up to Ragnarok, the End-Times: a breathtaking, surreal vision of twisting realities where nothing is quite what it seems.