قصة زائر غامض

Something strange happens in the room the young detectives have made their headquarters. They discover that someone has entered it every night. Is he: a thief, or someone who jokes with them?

To learn more, read the novel (زائر غامض) from the series مكتب التحقيقات السرية

"The Secret Investigation Bureau" series includes ten detective novels in which young detectives go through various adventures to uncover the culprits of the mysterious events. Detective stories prompt the reader to search for solutions to mysteries and guess the outcome of their mysterious events.