In Search for the Lost Giants, stonemasons Bill and Jim Viera pursue the mystery behind the ancient stone structures they stumbled upon in the Massachusetts woods. Could they be clues to a lost civilization not found in history books? After doing some research, the brothers found dozens of published accounts of giant bones and skeletons found in similar structures across the country. Many of the remains were those of 9-12 feet tall humanoids – with double rows of teeth. But none of the reported skeletons can be found in any museum. Did a race of giants once exist? And if they did, will the brothers find the evidence today?