"Washington's Doubloon" is a story of intrigue combining historical facts and legends about the gift of a special Brasher Doubloon to President George Washington and the lost treasure of the Knights Templar to offer a plausible answer to the question, "How did America pay off all its debts after the Revolutionary War and actually end up with a surplus?"The story begins with a connection between the theft of a Brasher Doubloon in Miami, Florida, and an attempted kidnapping of an Indian chief of the Mi'qmaq Tribe in Nova Scotia, both believed to be carried out by foreign terrorists. The chief was supposed to know the location of hidden Knights Templar treasure, perhaps brought to the New World by Henry Saint Clair in 1398. A team of adventurers, including Natalie, Dietrich, and Dr. Randall Fox introduced to us in the first two books of the trilogy, "Mystery at the Thirteen Sycamores" and "The Seton Secret," as well as linguist and Native American expert, Dr. Allen Gaw, daughter Lauren, and fellow archaeologist, Dr. John Zachary Bartholomew, set out to solve the mystery of the "New Jerusalem on the Potomac." Their efforts to find the treasure using hidden pieces of a puzzle take them to Halifax, Nova Scotia, Boston, Massachusetts, Newport, Rhode Island, and the Newport Tower.The clues found along the way lead to deadly encounters with the terrorists and a chilling surprise ending.