Lady Denning loves Hon. Charles Raleigh, but for some unknown reason is afraid of him. Sir Charles, realizing this, welcomes a message ordering him to join his regiment in Flanders. While in battle he sacrifices his arm in saving the life of Lady Denning's brother. Some time later, in London, he inherits an estate which includes a haunted castle at Lincolnshire. He goes to the castle to investigate. Opening a panel in the wall he finds the skeleton of a man. Beside it is a letter evidently written before death. It tells how the first Sir Charles had insulted a certain Lady Olive. Her cause was championed by Godfrey, who challenged Sir Charles. They agreed to throw dice to see who should commit suicide. Godfrey lost and wrote this letter before taking his life. The modern Sir Charles then understands why Lady Denning fears him. It's the atonement he must pay for the folly of his ancestor. He returns to Lady Denning, who, after hearing her brother's story, for some unexplainable reason has lost her fear of Sir Charles. He has atoned for the wrong done by his ancestor.