This book is part of the esteemed 'El Hilaal Books for Boys and Girls' series, specifically an installment from 'The 13 Devils' collection by the renowned author Mahmoud Salem. This particular issue, titled 'Disappearance of Number Zero,' is the 270th volume, published in August 1998. The series is celebrated for its thrilling adventures and captivating mysteries that have enthralled young readers across the Arab world for decades. Mahmoud Salem is a celebrated pioneer in children's and youth literature, known for his masterful ability to craft suspenseful plots and develop memorable characters. 'The 13 Devils' series follows a group of young, intrepid heroes as they unravel enigmatic mysteries and confront various challenging situations. This installment promises another gripping journey into the unknown, challenging the protagonists to solve the perplexing case of the vanished 'number zero'. Readers can anticipate a compelling blend of suspense, action, and clever detective work that has made Salem's works enduringly popular, fostering a love for reading and critical thinking among its target audience.