How a phone app triggered an international manhunt for the killer of a U.S. college student
Roommates of Binghamton University nursing student Haley Anderson became concerned over her whereabouts due to her silence on social media in 2018. They soon got some answers using a smartphone app, which then triggered investigators to pursue an international manhunt stretching to Nicaragua. CBS News contributor Maria Elena Salinas joined CBSN to preview this week's episode of "48 Hours."