An Irish girl visitng New Orleans decides that Yancy is to be her future husband.

An army officer with vengeance on his mind tries to stop a presidential pardon from reaching a man who is scheduled to die before a firing squad.

Shop owners receive threats of violence if they refuse to sell their property to three strangers.

Yancy tries to find out who's responsible for recent grave robberies.

Yancy and Pahoo are framed for a series of crimes, and now face execution.

A mysterious mad bomber steals explosives and threatens to blow up the entire city of New Orleans.

Merchants are in such fear for their lives that Yancy gets no cooperation in his attempt to break a new protection racket.

Yancy suspects foul play when a lottery winner dies before she can collect.

Yancy is arrested on a charge of high treason. His crime: selling John Wilkes Booth the gun that killed President Abraham Lincoln. While Derringer is held in solitary confinement, his friends must refute forged evidence and find where the his matched set of pistols, the ones alleged purchased by Booth, were hidden when renegades ransacked his plantation during the Civil War.