MADRID—Ana Maria Knezevic traveled from South Florida to Spain in December to get away for a while. Her family and friends say the naturalized American originally from Colombia has been going through a nasty divorce from her Serbian husband, but the trip was also a chance to explore new places.
Then, she vanished—two weeks ago, shortly after a man wearing a motorcycle helmet disabled the security cameras at her Madrid apartment building by spray painting the lenses. The next day, two friends received separate text messages—one in English, one in Spanish—from the 40-year-old’s phone saying she was running off for a few days with a man she had just met.
