Lyra and Will, her newfound friend, tumble separately into the strange tropical otherworld of Cittàgazze, "the city of magpies", where adults are curiously absent and children run wild. Here their lives become inextricably entwined when Lyra's alethiometer gives her a simple command: find Will's father. Their search is plagued with obstacles--some familiar and some horribly new and unfathomable--but it eventually brings them closer to Will's father...

In the mid-21st century major world cities are controlled by a formidable security force and clairvoyant underworld cell member Paige commits acts of psychic treason before being captured by an otherworldly race that would make her a part of their supernatural army

Paige Mahoney has escaped the brutal penal colony of Sheol I, but her problems have only just begun: many of the fugitives are still missing and she is the most wanted person in London. As Scion turns its all-seeing eye on Paige, the mime-lords and mime-queens of the city's gangs meet, Jaxon Hall and his Seven Seals prepare to take center stage, and bitter fault lines run through the clairvoyant community.

Continues the story of Austrian Prince Alek who, in an alternate 1914 Europe, eludes the Germans by traveling in the Leviathan to Constantinople, where he faces a whole new kind of genetically-engineered warships

"Following a bloody battle against foes on every side, Paige Mahoney has risen to the dangerous position of Underqueen, ruling over London's criminal population. But, having turned her back on Jaxon Hall and with vengeful enemies still at large, the task of stabilizing the fractured underworld has never seemed so challenging. Little does Paige know that her reign may be cut short by the introduction of Senshield, a deadly technology that spells doom...

Alek and Deryn encounter obstacles on the last leg of their round-the-world quest to end World War I, reclaim Alek's throne as prince of Austria, and finally fall in love

"The Great War is over. The city of Lower Proszawa celebrates the peace with a decadence and carefree spirit as intense as the war's horrifying despair. But this newfound hedonism--drugs and sex and endless parties--distracts from strange realities of everyday life: Intelligent automata taking jobs. Genetically engineered creatures that serve as pets and beasts of war. A theater where gruesome murders happen twice a day. And a new plague that even...

Nicolette's awful stepsisters call her "Mechanica" to demean her, but the nickname fits: she learned to be an inventor at her mother's knee. Her mom is gone now, though, and the Steps have turned her into a servant in her own home. But on her sixteenth birthday, Nicolette discovers a secret workshop in the cellar and begins to dare to imagine a new life for herself. Could the mysterious books and tools hidden there -- and the mechanical menagerie,...