13-year-old Dario Cicolecchia disappeared from a small Swiss village in 1993. His body was later found in a cornfield, with signs of sexual violence. There was no apparent evidence at the scene, but microscopic examination revealed diatoms - single-celled organisms that live in and around water. Could the tiny diatoms help investigators solve the case? Hosts: Colleen O’Brien, Erica White. Audio Supervisor: Tommy O’Brien. Theme Music: 'The Drama' by Rafael Krux (orchestralis.net). RAINN (US) 1-800-656-4673 / https://www.rainn.org/. National Sexual Violence Resource Center (US) https://www.nsvrc.org/