If you've seen all four episodes of The Listeners, you might still have questions about the origin of the hum and exactly what happened in the closing moments of the show.
For those wondering if BBC One's The Listeners is based on a true story, you might be surprised to find the surreal drama does have roots in real events. Protagonist Claire, has her life turned upside down when it appears she's the only person able to hear a mysterious hum. Consumed by the noise and its origin, she experiences intense relief when as a teacher, one of her students, Kyle, admits he can also hear the hum.
