John Ryker was a gunsmith. One of the best at a time when speed and skill with a shooting iron were as vital to survival as food in your belly. Then one day Ryker sold a man a gun - a Derringer - that later killed a President. That incident set Ryker on a vengeance trail of blood and conflict that would test his gun-skill to its farthest limits. And so the gunsmith became a killer - one whose professional mastery of the West's armoury of death-dealing firepower made him the deadliest around...