In 1956, the pride of Italy's passenger liner fleet, the Andrea Doria, set sail from Genoa bound for America. More than 3,500 miles away, the liner Stockholm left New York heading home to Sweden. In less than 8 days, the ocean liners mysteriously collidedin the North Atlantic in one of the 20th century's worst maritime accidents. Now, Deep Sea Detectives John Chatterton and Richie Kohler launch a full-scale investigation into what happened on July 25 and uncover controversial new evidence.