The Professor in Owen O'Shea's book is the imaginary American Richard Stein. As Owen O'Shea and the Professor travel through Ireland, O'Shea notes the Professor's collection of amazing magic numbers in fascinating detail. His mathematical curiosities are wide ranging, concerning the 1915 sinking of the Lusitania to coincidences about Apollo 11 to the first moon walk to new numerical curiosities. The new curiosities, among many others, center on Presidents Lincoln and Kennedy; the USA and Ireland; the two World Wars; the King James Version of the Bible, and James Joyce. The Number of the Beast, 666, is discussed as well, as are many new equations involving that famous number - all appearing here for the first time. And for those fascinated by games and gambling, a number of curious proposition bets involving dice, darts, and playing cards, and various mathematical puzzles are scattered throughout this singularly entertaining book.