Judy Wood is the author of Where Did The Towers Go?
She is a former Professor of Mechanical Engineering with a PhD from Virginia Tech.
Specifically, her central thesis is that the destruction of the World Trade Centre was not caused by planes crashing into the buildings or by traditional controlled demolition, but rather by the use of directed energy technology (DEW).
Her book lays down an unbelievably detailed examination of the evidence.

Ground Zero and the nearby areas were captured in photographs many thousands of times, but nobody analysed them properly, which is why Judy's work is so important.
The evidence doesn't match the story
Most people never looked closely at the physical evidence.
Judy did.
And what she found doesn't fit any of the popular explanations.
The Twin Towers each weighed roughly 500,000 tonnes, and most of that was steel. When something that heavy falls, it lands. Yet Ground Zero ended up with barely a pile. Firefighters walked across the site describing, in their own words, an empty basin.
Where did half a million tonnes of building go?

Then there is the "bathtub", the underground wall built to keep the Hudson River out of the foundations. If those towers had come down under gravity, the bathtub should have been crushed and lower Manhattan flooded. It wasn't. It survived with surprisingly little damage, which tells you the buildings never came down the way we were told it did.
The seismic readings tell the same story.
Columbia University's observatory registered only about 2.3 magnitude for each tower's destruction [^16b76a]. Compare that with the readings you'd expect from hundreds of thousands of tonnes of steel and concrete slamming into the earth. The numbers simply don't match a gravitational collapse [^950148].
Judy doesn't ask us to trust her. She asks us to look at the photographs, and she has compiled more of them, more carefully, than anyone else.
She shows the complete lack of debris and the presence of unusual damage patterns, which forces one to ask a lot of questions.