Just finished reading Dark Nights: Seasonal Patterns in British Paranormal Activity by Dr. James Hartley (published Autumn Books, 2023, £16.99). This is genuinely one of the most rigorous examinations of why paranormal activity reports spike during winter.
What works: Hartley actually uses statistical analysis rather than anecdote. He examines 40 years of Fortean Times reports, UFO databases, and paranormal investigation logs. The correlation between dark nights and increased reports is significant and reproducible. He also addresses the psychological factors without dismissing the phenomena entirely. That balance is rare.
What doesn't: The conclusion is frustratingly inconclusive. He identifies the pattern but stops short of explaining whether it's psychological (we notice more in darkness), environmental (electromagnetic changes), or genuinely increased activity. For a book called Dark Nights, it's oddly uncertain.
Overall: Worth reading if you're serious about understanding paranormal investigation methodology. It's academic without being impenetrable. Recommended for anyone monitoring winter activity - gives you proper frameworks instead of just folklore.