7 p.m. April 5, Smithsonian Channel The sinking of the RMS Titanic remains one of the most enduring and mysterious tragedies of the 20th century. For decades, investigators and amateurs alike have floated theories for why it occurred and who was to blame for the extraordinary loss of life, but no one answer could fully explain what happened. Until now. This two-hour special investigates a century of theories and uncovers astonishing new forensic evidence that proves the most likely theory for the case. The disaster spawned formal inquiries on both sides of the Atlantic. But in the end, two critical questions remained unanswered: Why did the ship hit the iceberg in the first place? And why did the ship closest to Titanic, the Californian, never come to its rescue? Author and historian Tim Maltin re-opens the Titanic case. Maltin has spent 20 years researching the Titanic tragedy and has uncovered evidence of a rare natural phenomenon that will forever change our understanding of the disaster. Maltin has found proof that both the Titanic and the Californian were deceived by mirages, dooming the passengers to their fate.