Far Beyond the Wave — Dafydd ab Hugh

There is dangerous turmoil in Arthur's Camelot. Interlopers from afar future century are hiding in stolen bodies of loyal knight and royal enemy alike. And inside the mind of noble Lancelot, a battle rages for domination.

In pursuit of a bloodthirsty fanatic, twentieth century SAS officer Peter Smythe has journeyed back fifteen hundred years--unaware that he, too, has been followed across the ages. And now magic and technology have combined to cast Smythe in the role of reluctant legendary hero. For here in a treacherous court, in a mind that battles to expel him, only an agent out of time can prevent an insidious betrayal of the King--and halt the terrifying metamorphosis of an imperiled world that splinters and shifts all around him.