But the best disguise, I find, is always the absolute bollock naked truth. It's really strange. Nobody believes it.

This is an amoral morality play. It's also got songs in it.

Fires keep starting. All across the city, arsonists worm their way into respectable people's homes only to burn them all down. It's a plague. And we don't know why.

But Trueman is no fool. He can spot an arsonist from a mile away. These two strangers with troubled pasts who turn up on his doorstep asking for a spare room can't be arsonists. They're too polite. Like him. Everybody is far too respectable to act on their suspicions. Even when they fill his attic with barrels of petrol and ask him to help measure the fuse.

In a new version by Simon Stephens, with songs by Chris Thorpe, Trueman and the Arsonists explores how moral lethargy can invite evil in - even encouraging you to give it a warm blanket and a nice dinner.

This edition was published to coincide with the world premiere at the Roundhouse in London, in October 2023.

Max Frisch (1911-1991) was a playwright and novelist who, together with his Swiss compatriot Dürrenmatt, is considered one of the most important postwar playwrights writing in German.

Simon Stephens began his theatrical career in the literary department of the Royal Court Theatre, where he ran its Young Writers' Programme. His plays for theatre include Bluebird (Royal Court Theatre) Herons (Royal Court Theatre, 2001); Port (Royal Exchange Theatre, Manchester, 2002); One Minute (Crucible Theatre, Sheffield, 2003 and Bush Theatre, London, 2004); Christmas (Bush Theatre, 2004); Country Music (Royal Court Theatre Upstairs, 2004); On the Shore of the Wide World (Royal Exchange Theatre and National Theatre, London, 2005); Motortown (Royal Court Theatre Downstairs, 2006); Pornography (Tricycle Theatre, London, 2009); Harper Regan (National Theatre, 2008); Sea Wall (Bush Theatre, 2009); Heaven (Traverse Theatre, 2009); Punk Rock (Lyric Hammersmith, London, 2009); The Trial of Ubu (Essen Schauspielhaus/Toneelgroep Amsterdam, 2010); A Thousand Stars Explode in the Sky (co-written with David Eldridge and Robert Holman; Lyric Hammersmith, London, 2010); Wastwater (Royal Court Theatre Downstairs, 2011); Morning (Lyric Hammersmith, 2012); an adaptation of A Doll's House (Young Vic, 2012); an adaptation of The Curious Incident of the Dog in the Night-Time (National Theatre, 2012); Blindsided (Royal Exchange, 2014); and Birdland (Royal Court, 2014). His radio plays include Five Letters Home to Elizabeth (BBC Radio 4, 2001) and Digging (BBC Radio 4, 2003).