Spring-Heeled Jack

People are being stolen from the streets by a monster. By all accounts, it has burning eyes, breathes blue flames, and can leap the height of a building at a bound.

While Vastra and Jenny fend off an over-eager member of the gutter press, Strax dives into dangerous waters.

Is this Spring-Heeled Jack of legend, returned to terrorise the capital? Or are there more sinister forces at work?