The Sinister Signpost (Hardy Boys, #15)
Format: hardcover
ISBN:
9780448189154 (0448189151)
Publish date: April 1st 1975
Publisher: Grosset & Dunlap
Edition language: English
Series: The Hardy Boys 7 (#15)
This one definitely jumped the shark. The Hardy Boys aren't exactly known for their believability, but the plot of The Sinister Signpost is completely impossible. More than a few plot elements defy both logic and current physics.
I think the Hardy Boy books helped me with learning deductive and inductive skills. I had to work through logic. Who knew? I enjoyed all these books.