POTSDAM -- Author Matthew Glavin of Cranberry Lake, who penned the Adirondack Treasure series, will be speaking and signing autographs this weekend in Potsdam and Waddington.

On Friday, he will be signing books at Kinney Drugs on Market Street from 10 a.m. to noon and at Kinney's on Maple Street from 1 to 3 p.m.

On Saturday, Glavin will speak and sign books starting at 10 a.m. at the Hepburn-Waddington Public Library, Waddington.

The book, Adirondack Treasure-Isle Royale by Glavin and Michael J. Dolan, features a legendary treasure buried on Chimney Island, three miles downstream from Ogdensburg in the St. Lawrence River, during the French and Indian War.

The island was the site of a French fort, Fort Lévis, and was the site of the final battle of the war on what was to become American soil.  

The story also features Middle Eastern terrorists working with North Korea and planning on releasing a missile with a super-EMP (electromagnetic pulse) warhead from a ship in the St. Lawrence River.

The protagonists become entangled in the terrorists’ plot.