cover image At the Sound of the Beep

At the Sound of the Beep

Marilyn Sachs. Puffin Books, $3.95 (160pp) ISBN 978-0-14-034681-7

Since their divorcing parents plan to split them up, 10-year-old twins Mathilda and Matthew run away to live in San Francisco's Golden Gate Park, where they become enmeshed in the murders of homeless people. Ages 8-12. (May)