By Alaa Elassar, CNN (CNN) — The disappearance of Lynette Hooker in the waters off the Bahamas in April has put a lingering cloud of speculation over her husband and set off a federal criminal investigation, paving the way for a renewed search and new questions about what happened the night she went missing. Her husband, Brian Hooker, said the American boater fell overboard and vanished in rough waters despite his attempts to reach her as the pair, married for 25 years, traveled in a dinghy.