My name is Peter Grant, and until January, I was just probationary constable in that mighty army for justice known to all right-thinking people as the Metropolitan Police Service (and as the Filth to everybody else). My only concerns in life were how to avoid a transfer to the Case Progression Unit - we do paperwork so real coppers don't have to - and finding a way to climb into the panties of the outrageously perky WPC Leslie May. Then one night, in pursuance of a murder inquiry, I tried to take a witness statement from someone who was dead but disturbingly voluble....

Return to the world of Rivers of London in this first short-story collection from number one Sunday Times 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. 

It is the summer of 2013, and Abigail Kamara has been left to her own devices. This might, by those who know her, be considered a mistake. While her cousin, apprentice wizard and police Constable Peter Grant, is off in the sticks chasing unicorns, Abigail is chasing her own mystery. Teenagers around Hampstead Heath have been going missing, but before the police can get fully engaged, the teens return home - unharmed but vague about where they've been.

Rotherweird is a twisted, arcane murder-mystery with shades of Deborah Harkness, Hope Mirrlees and Ben Aaronovitch, Mervyn Peake and Edward Gorey at their disturbing best. The town of Rotherweird stands alone - there are no guidebooks, despite the fascinating and diverse architectural styles cramming the narrow streets, the avant-garde science and offbeat customs. Cast adrift from the rest of England by Elizabeth I, Rotherweird's independence is subject to one disturbing condition: nobody, but nobody, studies the town or its history.

Camden, North London. A tangled, mangled junction of train lines, roads and waterways. Where minor celebrities hang out with minor criminals and where tourists and moody teenagers mingle. In the heart of Camden, where rail meets road meets leyline, you might find the Arcana Emporium, run by one Alex Verus. He won't sell you a wand or mix you a potion, but if you know what you're looking for, he might just be able to help.

Conrad Clarke, former RAF pilot and alleged gangster, gets a text – and a visit – from The Allfather. Odin has a challenge for Conrad: Sign up to protect England from wild magick and get a commission in the King’s Watch. All he has to do is find a missing witch. Simple. Conrad never could resist a challenge. Before you can say “Ragnarok”, he’s plunged into a world of gods, mages, witches, dwarves, and one very aggressive giant mole.

We join the action just as our ‘hero’ Tom, (early thirties, reads the ‘news’ on the radio) finds out that his girlfriend has not left him. Tom, I have not left you. But I am gone. Please carry on as normal. Love always, Hayley. Has Hayley gone or hasn’t she? Is she coming back? If she has gone, but is coming back, when is she coming back? And what is he supposed to bloody do in the meantime? And what if she’s never coming back?

Jodi Taylor reads the long-awaited prequel in her Chronicles of St Mary’s series, as Dr Bairstow struggles to set up St Mary’s as we know it in a world still scarred by the ravages of civil war. Ever wondered how it all began? It’s two years since the final victory at the Battersea Barricades. The fighting might be finished, but for Dr Bairstow, just now setting up St Mary's, the struggle is only beginning. How will he assemble his team? From where will his funding come?

Lydia has always known she has no power, especially next to her infamous and more-than-slightly dodgy family. Which is why she carved her own life as a private investigator far away from London. When a professional snafu forces her home, the head of the family calls in a favour, and Lydia finds herself investigating the disappearance of her cousin, Maddie. 

Conrad needs a rest. The universe has other ideas. He had planned the perfect weekend in the English Lake District - tie up some loose ends before spending the night with his girlfriend. Simple. What could possibly go wrong? Everything is the answer. An innocent man is murdered to cover up magickal misdeeds, and before they can draw breath, Conrad and his partner in magickal crime-fighting, Vicky Robson, are on the trail of a mage who hides behind dark magick to kill at a distance.

A long time ago in the future, the secret of time travel became known to all. Everyone seized the opportunity - and the world nearly ended. There will always be idiots who want to change history. And so, the Time Police were formed. An all-powerful, international organisation tasked with keeping the timeline straight. At all costs. Their success is legendary, and the Time Wars are over. But now the Time Police must fight to save a very different future - their own. This is the story of Jane, Luke and Matthew - arguably the worst recruits in Time Police history.... 

The doughnut is a thing of beauty, a circle of fried, doughy perfection - a source of comfort in trying times, perhaps. For Theo Bernstein it is far, far more. An accident at work lost Theo his job (and his work involved preventing a Very, Very Large Hadron Collider from blowing up, so he's unlikely to get it back). His wife has left him; he doesn't have any money; and news arrives that his good friend, Professor Pieter van Goyen, renowned physicist and Nobel laureate, has died.

It's 1883. Thaniel Steepleton returns home to his tiny London apartment to find a gold pocket watch on his pillow. Six months later the mysterious timepiece saves his life, drawing him away from a blast that destroys Scotland Yard. At last he goes in search of its maker, Keita Mori, a kind, lonely immigrant from Japan. Although Mori seems harmless, a chain of unexplainable events soon suggests he must be hiding something.

One fine day, A.D. 70, Sosia Camillina quite literally runs into Marcus Didius Falco on the steps of the Forum. It seems Sosia is on the run from a couple of street toughs, and after a quick and dirty rescue, P.I. Falco wants to know why.

Meet the ultra-rational Dr Newton Barlow. Cool, cynical, scientific, he’s the last man you’d want to be a bridge between the living and the dead. But with his academic reputation in tatters, and nothing to lose but his few remaining marbles, the great skeptic is about to discover that the past that haunts him will be nothing compared to his ghost-ridden future.