The Iron Lance (Celtic Crusades Series #1) » (~)

Stephen R. Lawhead is an internationally acclaimed author of mythic history and imaginative fiction. His works include the first two books of the Celtic Crusades, The Iron Lance and The Black Rood, Byzantium the Pendragon Cycle, The Song of Albion, and Dragon King trilogies, as well as the science fiction novels, Empyrion I and II and Dream Thief.

In book one of the Celtic Crusades series, a Scottish boy travels to Jerusalem to try to regain his family's stolen lands, and ends up saving the relic Iron Lance that pierced Christ's side.

Interzone Magazine

This is a rip-roaring adventure story; the pace rarely flags. There's scheming, murder and betrayal aplenty.