Sammamish resident Jacqueline O’Hara will sign copies of her book, “When Circles End,” from 2-4 p.m. Sept. 6 at Vovito Caffè & Gelato, 700 110th Ave. N.E. No. 195, Bellevue.

The book is about Chelsey, who after being kidnapped, finds herself in the middle of an unexpected adventure where she discovers that the fate of the universe is at stake. With the help of 11 other kids from all over the United States, Chelsey is given a mission –— to save the world and beyond.