David Borgenicht is a writer, editor, publisher, and co-author of all the books in The Worst-Case Scenario Survival Handbook series. He lives in Philadelphia. David Morton has reached the summit of Mt. Everest six times and is one of the premier international expedition leaders operating today. In addition to Mt. Everest, David has guided and climbed the Seven Summits (the highest peak on each continent), and participated in climbing trips to Pakistan, Mongolia, Tibet, Nepal, and across the Americas. Travelling extensively throughout the world, David spends his time working as a professional mountain guide and photographer. Bill Doyle was born in Lansing, Michigan, and wrote his first mystery when he was eight. He loved seeing the shock on people's faces when they discovered the identity of the story's villain-and knew then that he was hooked on writing. Bill has written for Sesame Workshop, LeapFrog, Scholastic, Rolling Stone, TIME For Kids and the Museum of Natural History. He lives in New York City with a mysterious dachshund named Esme.