Virgil Fox and Samantha Glove, London's paranormal private detectives find themselves running out of time to save a woman trapped within London's notorious Woolwich Tunnel. Using real life reports of the tunnel's deceptive time-bending phenomenon, backed up by accounts from the Old Wharf archive, an esoteric library of inter-dimensional gateways and other unexplained matter, bubbling between the gaps of London's ancient streets.