As We Forgive Them is a gripping mystery novel that follows the story of Gilbert Greenwood and Reginald Seton, two bachelors who find themselves entangled in a dangerous game of secrets and murder. When Greenwood offers assistance to a man and his young daughter, he soon learns that the man is in search of a secret that will make him wealthy beyond his dreams. As the story unfolds, Blair becomes wealthy but refuses to share his secret with anyone, even his daughter. When Blair is found dead on a train, Greenwood and Mabel suspect foul play. An unknown individual has been named to execute Blair's will, and a mysterious code is discovered that may hold the key to his riches. Greenwood and Mabel must work together to uncover the truth and find the killer before they become the next victims.