Someone Knows Something is cold-case journalism told at ground level. It does not rush toward certainty. Instead, it lets documents, remembered conversations, street-level geography, and recorded interviews accumulate until the shape of a case becomes harder to ignore. Season 10 follows the disappearance of Jacqueline Furlan-Smith in Playa del Coco, Costa Rica, after she and Sebastian Furland moved there. The setting matters. A beach town of expats, taxis, bars, construction, surf injuries, informal searches, and uncertain sightings becomes part of the investigation rather than a backdrop. The reporting keeps returning to practical questions. Who saw Jackie after August 17? Which sightings were discarded by the OIJ? What did Carol, Keith, Krista, Luis, and Travis remember, and what did those memories actually prove? Some leads are vivid but unstable. A red cab, a liquor store, a local watering hole, a woman who may or may not have been Jackie, and accounts of scratches or leg wounds all carry weight without becoming conclusions. The show’s tone is grave but not sensational. It gives family members, friends, neighbors, expats, investigators, and Sebastian room to speak in their own cadence, including uncertainty, contradiction, and discomfort. That patience is the point. A search that lasts weeks and finds no belonging of Jacqueline’s is not reduced to a plot beat; it becomes a record of effort, doubt, cost, and exhaustion. Sebastian’s explanations about stress, retirement, Costa Rica, and Jackie’s disappearance are presented beside other accounts rather than smoothed into a single verdict. The interviewer’s presence is active but quiet, asking direct questions and then letting the answers stand. Listeners are expected to remember names and weigh timelines. The show rewards attention to small details: a backyard conversation, a scar, a store camera, a beach bar, a search team, an engagement ring left behind with a phone. Its power comes from restraint. It understands that unresolved cases are not only mysteries; they are ongoing conditions for the people left behind.