Note: This review is of the out-of-print, original brown tweed book, not one of the newer rewrites. If you want to buy this book new then you can buy the Applewood reprint.
When the Hardy boys and their friends decide to explore a "haunted" house, they have no idea they're getting involved in another mystery involving kidnappings, underground fights, smugglers, and much more!
Morality
The villains do bad things. Ordinary virtues such as justice and respect are strongly upheld by the good guys.
Spiritual Content
A house is said to be haunted and when the boys go in it they hear a ghost-like scream.
Violence
Two characters are starved, one almost to death; a man is almost drowned; somebody threatens to drown the boys; the boys find blood in their dad's hat; and they are shot at several times. There are several other such occurrences, but they are not written disturbingly.
Drug and Alcohol Content
None.
Sexual Content
None.
Crude or Profane Language or Content
None.
Conclusion
If you have the time and just want a quick easy
read, I recommend this book. It has good morals and lacks inappropriate content while still being an exciting book. The writing is fairly simplistic, so it may bore older readers.