Wisher - Volume 4 - Bowler Hat and Fairycane

Merlin is dying, cut down by Glee the Goblin’s bullets. And Nigel’s control
over his powers is still insufficient to save him with a wish. One solution
left: a vial of dragon blood, the only artefact that can revive the enchanter.
The problem is that the vial is at MI-10 headquarters, part of its commander
George Cross’s private collection. It’s time for the last of the Genies to go
on the offensive.