In a surprising incident at the Leppävaara Sellon Library in Espoo, Finland, library employees Olli Myyrä and Antero Pertamo were astonished to find a bundle of 100-euro notes hidden between the pages of a returned book. The unexpected discovery occurred in April 2025 when Myyrä was examining the returned books and stumbled upon 20 fifty-euro banknotes, which left him momentarily in disbelief, leading him to reflect on the situation for a couple of minutes before seeking Pertamo's assistance in deciding what to do next.

After finding the cash, the duo contacted the last person who had borrowed the book, a woman who had returned it, under the pretense of inquiring if she had lost anything inside. The surprised borrower immediately recognized what the call was about and made her way to the library to reclaim her money. Although the librarians were questioned by the media about the circumstance of the cash being found in the book, they opted to maintain confidentiality regarding the details for privacy reasons.

This incident not only highlights the unexpected surprises that can occur in everyday library operations but also raises questions regarding the handling of lost or forgotten possessions. It emphasizes the importance of maintaining trust and confidentiality in such situations, especially in public service environments, where personal items can sometimes unintentionally end up in the hands of others. Ultimately, the event serves as a reminder of the unpredictable nature of library work and the interesting anecdotes that can arise from it.