In their continuing adventures, magician's apprentice Nathaniel, now fourteen years old, and the djinni Bartimaeus travel to Prague to locate the source of a golem's power before it destroys London.

Lithuania, 1943. A father drowns in the all-consuming grief of a daughter killed by the Nazis. He can't bring Chaya back from the dead, but he can use kishuf, an ancient and profane magic to create a golem in her image. A Nazi killer, to avenge her death. When Vera awakens, she can feel her violent purpose thrumming within her. But she can also feel glimpses of a human life lived, of stolen kisses amidst the tragedy, and of a grisly death. And when...

On her seventeenth birthday, Hannah Williams begins exhibiting impossible, temporary mutations--gills one day and horns the next--that are the consequences of a desperate bargain her mother made with a sheyd decades ago, and to break the family curse, Hannah and her brother track down their mother's estranged family and discover a legacy that traces back to the Golem of Prague.

Despite being a great Minecraft player, Morgan feels his leadership of the team slipping away as the next splinter of the Evoker King takes the form of a golem and challenges each member of the team to run a dangerous obstacle course. Normally they would work together, but this time they are each forced to face the challenge alone--with no second chances and a river of hot lava waiting for them if they fail!