Watch the Dateline episode, "Death at the Spa" now

Aliso Viejo is a leafy green wedge of the suburban sprawl that makes up southern California’s mythic Orange County. Not a lot happens in Aliso Viejo. And the people that live there prefer that. Except on May 15th, 2018, just past 1:00 p.m., something did happen. Something big. An explosion on Mareblu Street. A two-story commercial building was severely damaged. Idilko Krajnyak, owner of a day spa in the building, was killed in the explosion. Two of her clients were injured. Had a gas leak inside the building caused the explosion? Could it have been a terror attack? Or was it something more personal? To find the answer, you can watch the full episode on Peacock now. You can also watch on the NBC App, or listen on our podcast. After you’ve seen the episode, watch more of an interview between the eventual suspect and investigators. Also, watch Ildiko’s loved ones remember her as an exceptional, adventurous woman. Plus, listen to the latest episode of “Talking Dateline,” as Josh Mankiewicz and Andrea Canning go behind the scenes of the making of the episode.