The Seventh Man by Max Brand

Dangerous men were no novelty for Gregg. He had lived with them, worked with them, as hard-fisted himself as any, and as ready for trouble, but the man of the mountain-desert has a peculiar dread for the practiced, known gun-fighter. In the days of the rapier when the art of fence grew so complicated that half a life was needed for its mastery, men would as soon commit suicide as ruffle it with an assured duellist; and the man of the mountain-desert has a similar respect for those who are born, it might be said, gun in hand. There was ample reason for the prickling in his scalp, Vic felt, for here he sat on an errand of consummate danger with three of these deadly fighters. Two of them he knew by name and repute, however dimly, and as for Buck Daniels, unless all signs failed the dark, sharp-eyed fellow was hardly less grim than the others. Vic gauged the three one by one. Daniels might be dreaded for an outburst of wild temper and in that moment he could be as terrible as any. Lee Haines would fight coolly, his blue eyes never clouded by passion, for that was his repute as the right hand man of Jim Silent, in the days when Jim had been a terrible, half-legendary figure. One felt that same quiet strength as the tawny haired man talked to Barry now; his voice was a smooth, deep current. But as for Barry himself, Gregg could not compute the factors which entered into the man. By all outward seeming that slender, half-timid figure was not a tithe of the force which either of the others represented, but out of the past Gregg's memory gathered more and more details, clear and clearer, of the wolf-dog, the black stallion, and the whistling man who tracked down Silent -- "Whistling Dan" Barry; that was what they called him, sometimes.

Nothing was definite in the mind of Gregg. The stories consisted of patched details, heard here and there at third or fourth hand, but he remembered one epic incident in which Barry had ridden, so rumor told, into the very heart of Elkhead, taken from the jail this very man, this Lee Haines, and carried him through the cordon of every armed man in Elkhead. And there was another picture, dimmer still, which an eye witness had painted: of how, at an appointed hour, Barry met Jim Silent and killed him.