All her life, Susan’s loved ones have been hiding a terrible secret from her: If she thinks too hard, her head will explode. Until now, Susan has lived happily in a bubble of TV and takeaways, social media and small talk; anything to distract her from the spiralling thoughts that so often haunt the rest of us, thoughts that would be deadly for her. But when reality creeps in and Susan’s perfectly curated world starts to crumble, it begs the question: can we distract ourselves from the real world forever. And should we?