The play is set on Christmas Eve, where Isla, feeling adrift after a difficult past year, is wandering through the vaults and tunnels beneath Waterloo. She is searching for a suitable gift for her mother but is unsuccessful until she discovers a unique establishment: the Lost Library of Leake Street. 

The Lost Library of Leake Street returns to The Glitch following a sold-out run in 2024. The production aims to provide an atmosphere of wonder, magic, and festive tenderness. The narrative follows Isla on a journey through the library as she explores the various stories London holds, ultimately learning about connection in unexpected locations.