Librarian spy Irene has standards to maintain, especially while on probation. And absconding from a mission via a besieged building doesn't look good. But when her escape route home goes up in flames, what's a spy to do? However, it seems Gates back to the Library are malfunctioning across dozens of worlds. Worse still, her nemesis Alberich is responsible - and he plans to annihilate the Library itself. Irene and assistant Kai are posted to St Petersburg,...

Librarian Spy Irene is heading into danger. Not for the first time, but could this be her last? She's tasked with a terrifyingly dangerous solo mission to eliminate an old enemy, which must be kept secret at all costs. But even more troubling news emerges. Multiple worlds are disappearing - and the Library may have something to do with it. Determined to uncover the truth behind the vanished worlds, Irene and her friends must descend into the unplumbed...