The silent witness: A polygraphist's casebook By Gugas, Chris Books / Hardcover True Crime ISBN: 0138100691 / Publisher: Prentice Hall, January 1979 Price $41.75 Free Shipping Send to a friend Collectible - Good First Edition With Dust Jacket First edition copy. Collectible - Good. Acceptable dust jacket. (True Crime) $41.75 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.