When the Titanic left the Harland & Wollf shipyard in Belfast and entered the choppy Irish sea for the first time on 2, April 1912, Thomas Andrew, the chief naval architect, had no doubt in his mind it would pass its trials and be declared seaworthy. After all, rumours were floating around for months before its arrival in Southampton that it was the ship that was unsinkable.

I remember years ago watching a TV documentary about the notorious serial killer Ted Bundy. It was an interview on death row an hour before he was to be executed.