I was glad to be back in the world of Witherward and I was glad to read this sort of prequel.
I enjoyed it even if I wasn't a big fan of Oliver and Cassia.
As I already wrote I'm a fan of alternate city and this London was as fascinating as I remembered.
The story is well plotted even if it drags a bit at time.
It can be read as a stand alone or as the first in this series.
I enjoyed it and it' recommended.
Many thanks to the publisher and Netgalley for this ARC, all opinions are mine