In each of these zany, fast-paced adventure stories, a young team of investigators uncover the truth behind a real-life historical mystery.The brilliant and handsome King Arthur has become a legendary figure - but did he really exist? When the Time Detectives star in a school performance of King Arthur and his Round Table, they have a terrifying ghostly visitor. Could this really be King Arthur himself? And if so, what does he have to tell them about so urgently?