Clockwork Prince by Cassandra Clare (Book #2 of the Infernal Devices)

This second book of Clare's Infernal Devices series was a great read. Tessa Gray is living under the protection of the Insitute in a London that features all the dirtiness, darkness and danger of Dickens but with a new layer. Magic and magical beings exist but are invisible to 'mundanes': people without magic. The Nephilim are half angel law enfocers of this world and are at war with the nefarious Magister, a creator of clockwork minions. Tessa can shape change into a person if she touches something of importace to them, but she is a mystery to herself and those around her, with the power of those known as warlocks but missing their marks of inhumanity.

But Charlotte and Henry Branwell, heads of the Enclave and Tessa's protectors, are also at war with divisions within her own ranks, particularly with the devious Benedict Lightwood and his machinations to have her ousted. The Institute are given two weeks to find the Magister by Consul Wayland, head of the Enclave, and a breakneck story takes off. Tessa has to cope with one twist and turn after another as she comes face to face with her brother - who betrayed her and is working with the Magister - with her questions about what she is, with betrayal from those around her and with her powerful feelings for the two Nephilim who brought her to the sanctuary of the Institute: Will and Jem.

As in the first book, Clare's plotting is tight and fast paced but combined with the passion and emotion of teenage love sesitively handled with an excellent understanding of Victorial norms and morals.

Clockwork Angel by Cassandra Clare (Infernal Devices #1)

16 year old Tessa Grey is arriving in Southampton from New York on board the steamship the Main.  Her American aunt, leaving her alone and Tess is more than ready to be reunited with her brother Nathan at the docks and travel with him to their new home in London.  He is not there to meet her and she goes willingly with the strange people sent to meet her on his behalf, but they are not benign.  Kept prisoner by the sinister Dark Sisters she is forced to undergo changes that drive her to the edge of madness.  At last she is rescued in a shower of rubble by two strange boys her own age and pitched into a world where magic and the supernatural live alongside and unseen by 'normal' people.

A great steampunk evocation of Victorian London with a supernatural twist, very well written and plotted.  Any book that opens with the lines. 'London.  April 1878.  The demon exploded in a shower of ichor and guts' is going to get my attention, but Clare kept me gripped beyond for the full 472 pages of this book.  Mostly written from Tessa's point of view, Clare never loses the pace of the plot but also deftly handles the compelling developing relationships between the characters of her book in a way that is commensurate with the mores and conventions of society at the time.