Kayla Mueller is seen here in this undated photo provided by her family. With the confirmed death of Kayla Mueller, new details have emerged about the American hostage's experience in ISIS captivity, ...

The female American aid worker who died while being held hostage by ISIS had spent much of her young life working internationally to help humanitarian causes, her family said today. Kayla Mueller was ...

PHOENIX — The world is getting its first look at Kayla Mueller in Islamic State custody after her parents released a video to ABC News. In the video, Mueller, who was killed in 2015, is shown wearing ...

WASHINGTON – Kayla Jean Mueller’s parents told a federal judge Friday that “there’s not a day, barely an hour” when they don’t think of their daughter, who was kidnapped in Syria and held hostage by ...