Dr. Dye takes a fresh new look at the subject of the mark of the beast. She begins with descriptions of the phylacteries (the tefillin) and the concept of skin infections (tzar'at) and then goes into great details on the letter "vav" which has the value of six.
From there she weaves through the story of Cain and Nimrod and then ties Nimrod to Nebuchadnezzar in the book of Daniel. She also looks at the story of Goliath and finally connects all these elements with the book of Revelation and the number 666.
This is a fascinating study of this symbol.