On February 15th, 1999, Carole Sund, her 15-year-old daughter Juli, and 16-year-old family friend Silvina Pelosso went missing from their motel room at Yosemite National Park. Former FBI Agent Jeffrey Rinek shares details from the investigation., In 1999, Carole Sund, her daughter Juli, and friend Silvina went missing from a Yosemite motel. Ex-FBI Agent Rinek shares investigation details.