Disappearance of Robert Levinson

Robert Alan Levinson (March 10, 1948 – date of death unknown) was an American former Drug Enforcement Administration and Federal Bureau of Investigation agent.
Levinson disappeared mysteriously on March 9, 2007 in Kish Island, Iran while on a mission for the CIA. Levinson's family received $2.5 million annuity from the CIA in order to stop a lawsuit revealing details of his work in Iran. He may have been held captive by the government of Iran. 
On November 26, 2013, Levinson, if he was still alive, became the longest-held American in history, passing Terry A. Anderson. According to his family, he suffered from type 1 diabetes, gout, and hypertension. 
His passport has never shown up in any other country. 
On March 25, 2020, Levinson's family announced his death, and although the date is unknown, it has been determined that he likely died while in Iranian custody.