This is a nail-biting adventure that whisks readers back in time to the daily chaos and heroism of 1940s London during the Blitz bombings. When Scarlett, Joe and their dog, Pippy, stumble upon a ghostly train visible only to them, they find themselves travelling back in time to Second World War London on a heroic mission. Young Alfie Suggs was tragically killed during the Blitz trying to rescue his Nan, who survived. Now it's up to Scarlett and Joe to save the boy - and they have just one hour to complete their mission. As they race through East London's eerie and deserted streets, dogfights howl in the sky, sirens blare and the bombs begin to fall. But although Scarlett and Joe find Alfie, his determination to save his Nan means they are drawn into her house during an attack. Following the raid, they realize they are trapped indoors, with an unexploded bomb outside which will detonate in less than half an hour. Together, the children must scramble through the rubble into the dark cellar of the house and out through the back garden if they are to rescue Alfie and complete their mission. But with Alfie injured, it's a race against time as the clock keeps ticking. This is a fast-paced and gripping journey through time to the war-torn streets of 1940s East-End London, by one of the most exciting talents in children's publishing.