Season Three of Underwood and Flinch begins with the 2014 short story, Disturbing the Devil. 

It's February 1863, and the newly opened Metropolitan Railway is the toast of London.

Among the travellers tonight are the vampire, Lord Underwood, and his guardian, Ben Flinch. But they aren't travelling alone, for Underwood and Flinch have been discovered by a group intent on their destruction.