Wealthy heiress Muriel Collins Barnett is no stranger to luxury cruises. She is a woman who wants it all and has the money to get it. But who will she bequeath her fortune to? Collins and her manservant cruise into an hour of unimaginable terror where money can't buy time, and she won't reach the next port of call.

There are two million mineshafts that could be hiding a murder victim's body, and in a fateful hour, police discover the whereabouts of German backpacker Anne Neumann in Coober Pedy, Australia. Ten other murder victims could be linked to her death, and police know they're on the hunt for a serial killer.