At Noon on Saturday, S.A. Williams will sign copies of her book, “Anna’s Secret Legacy,” a compelling World War II story that finds an American pilot and a brilliant female research scientist on the run because of her discovery that can either revolutionize medicine or — in the wrong hands — wipe out humanity.

Williams was educated in London, Paris, Madrid, Brussels and Rome. Her international background has provided an unusual cultural fluency which flourishes in her novels.

Information: annassecretlegacynovel.com.      

The bookshop is at 16 S. Main St. in Doylestown.

Information: 215-230-7610; www.doylestownbookshop.com