Burton and Swinburne return in a new wildly imaginative steampunk adventure, and this time they're facing their greatest foe?

Leicester Square, London. Blood red snow falls from the sky and a strange creature, disorientated and apparently insane, materialises out of thin air. Spring Heeled Jack has returned, and he is intent on one thing: hunting Sir Richard Francis Burton.

Burton is experiencing one hallucination after another; visions of parallel realities and future history plague his every thought. These send him, and his companions, on an unimaginable expedition - a voyage through time itself?