Blood Lance

A medieval knight turned private investigator is joined by Geoffrey Chaucer in his latest case featuring "clever twists and convincing period detail" (Publishers Weekly).
Private investigator and former knight Crispin Guest faces his most complicated case yet when he witnesses a body fall from London bridge into the frigid River Thames. Though the man's death is declared a suicide, Guest sees evidence of foul play. His investigation leads him to Sir Thomas Saunfayl, an old acquaintance from his knighthood days. It seems the dead man was bargaining with Sir Thomas for the Spear of Longinus, the weapon used to pierce the side of Christ on the Cross, which grants invincibility to its owner.
After his friend Geoffrey Chaucer arrives in London, all too eager to help find the spear, Guest finds himself trying to solve a conundrum of many parts, all centered around the same dangerous and coveted relic. With evocative period detail and an unforgettable cast of characters, Blood Lance was a Kirkus Reviews "Top 10 Hot Crime Novels" of Fall 2012.
"A lively tale of historical interest smoothly combined with a worthy mystery." ?Kirkus Reviews