"The Lost Friends" is an exciting detective novel by the famous writer Franklin Dixon. In this book, four young friends - Frank, Joe, Chub and Pete - find themselves involved in a dangerous adventure when their friend mysteriously disappears. With the help of intelligence, ingenuity and friendship, the boys solve the mystery and risk their own lives to bring the real truth to light. This book is full of unexpected twists, mysteries and unforgettable adventures that will keep the reader in suspense until the last page. "Lost Friends" is a story about true friendship, courage and mutual help, which will teach you that together we are stronger than separately.