| Volume 4
The Valley of Fear
Trent’s superior tasks him with helping a lady who came to the police to report the disappearance of her husband. The sergeant is stunned to discover the woman he is still in love with: Agnes. Her husband is the manager of a railway construction site far to the northwest, and he hasn’t been heard from in weeks. Worse, his last letters spoke of a mysterious danger threatening the camp. The pair go to investigate...