The Shadow of the Volcano

As they continue the hunt for their missing parents who are lost somewhere in the pages of history, twins Jemima and Joe Lancelot embark on their fifth time-travelling journey into the past, accompanied by best friend Charlie, and Max their Tonkinese cat. Their destination is the Roman town of Pompeii which lies in the shadow of Mount Vesuvius, a volcano on the verge of a devastating eruption.