Favours is a novella set in the Alex Verus universe that takes place in between Alex Verus #6, Veiled, and Alex Verus #7, Burned, told from the perspective of the time mage Sonder. Returning to London after his year-long assignment to Washington D.C., Sonder is called into Keeper HQ to work with Caldera on an investigation. What looks at first like a simple burglary quickly turns into something much more difficult and dangerous, forcing Sonder to choose where his loyalties lie.