Return to the world of Rivers of London in this first short-story collection from best-selling author Ben Aaronovitch. Tales from the Folly is a carefully curated collection that gathers together previously published stories and brand-new tales in the same place for the first time.

Alex Verus is part of a world hidden in plain sight, running a magic shop in London. And while Alex's own powers aren't as showy as some mages, he does have the advantage of foreseeing the possible future-allowing him to pull off operations that have a million-to-one-chance of success. But when Alex is approached by multiple factions to crack open a relic from a long-ago mage war, he knows that whatever's inside must be beyond powerful.

A weekly newspaper dedicated to the weird and the wonderful (but mostly the weird), The Stranger Times is the go-to publication for the unexplained and inexplicable. At least that's their pitch. The reality is rather less auspicious. Their editor is a drunken, foul-tempered and foul-mouthed husk of a man who thinks little of the publication he edits. His staff are a ragtag group of misfits. And as for the assistant editor...well, that job is a revolving door - and it has just revolved to reveal Hannah Willis, who's got problems of her own.

STOP. You should not have touched this flyer with your bare hands. NO, don't put it down. It's too late. They're watching you. My name is David Wong. My best friend is John. Those names are fake. You might want to change yours. You may not want to know about the things you'll read on these pages, about the sauce, about Korrok, about the invasion, and the future. But it's too late. You touched the book. You're in the game. You're under the eye. The only defense is knowledge. You need to read this book, to the end. Even the part with the bratwurst. Why?

In 1942, Lawrence Pritchard Waterhouse - mathematical genius and young Captain in the US Navy - is assigned to detachment 2702. It is an outfit so secret that only a handful of people know it exists, and some of those people have names like Churchill and Roosevelt. The mission of Watrehouse and Detachment 2702 - commanded by Marine Raider Bobby Shaftoe - is to keep the Nazis ignorant of the fact that Allied Intelligence has cracked the enemy's fabled Enigma code. In the present, Waterhouse's crypto-hacker grandson, Randy, is attempting to create a "data haven" in Southeast Asia....

English magicians were once the wonder of the known world, with fairy servants at their beck and call; they could command winds, mountains, and woods. But by the early 1800s they have long since lost the ability to perform magic. They can only write long, dull papers about it, while fairy servants are nothing but a fading memory.

Necromancer is such an ugly word, but it's a title Eric Carter is stuck with. He sees ghosts, talks to the dead. He's turned it into a lucrative career, putting troublesome spirits to rest, sometimes taking on even more dangerous things. For a fee, of course. When he left LA 15 years ago, he thought he'd never go back. Too many bad memories. Too many people trying to kill him.

A call from a distraught wife, and another from Lt. Murphy of the Chicago PD Special Investigation Unit makes Harry believe things are looking up, but they are about to get worse, much worse. Someone is harnessing immense supernatural forces to commit a series of grisly murders. Someone has violated the first law of magic: Thou Shalt Not Kill. Tracking that someone takes Harry into the dangerous underbelly of Chicago, from mobsters to vampires....

In the 20th century Earth sent probes, transmissions, and welcoming messages to the stars. Unfortunately, someone noticed. The Galactics arrived with their battle fleet in 2052. Rather than being exterminated under a barrage of hell-burners, Earth joined their vast Empire. Swearing allegiance to our distant alien overlords wasn't the only requirement for survival. We also had to have something of value to trade, something that neighboring planets would pay their hard-earned credits to buy. As most of the local worlds were too civilized to have a proper army, the only valuable service Earth could provide came in the form of soldiers....

Al MacBharrais is both blessed and cursed. He is blessed with an extraordinary white moustache, an appreciation for craft cocktails - and a most unique magical talent. He can cast spells with magically enchanted ink and he uses his gifts to protect our world from rogue minions of various pantheons, especially the Fae.