Three scholars monitored the members of a cult. The cult was led by a housewife called Dorothy Martin. She claimed to have been in touch with superior beings from a planet called Clarion. The aliens had sent her a message that a massive flood was imminent. Most of the US would be wiped out in a flood on Dec 21, 1954.
Investors in the stock market tend to avoid books on psychology. This is a pity. Performing as an investor has much to do with the mind.
When Prophecy Fails was an academic study on psychology. Though it was published in 1956, it is as relevant today as it was then.

