How do you catch a murderer when your suspects own the law?

Superintendent Rex Harme's job is to protect the super-rich from pirates and anarchists. It's not his job to investigate them. If they cared to be investigated, they wouldn't be living on a luxury cruise ship that accepts no national jurisdiction. But when one of the super-rich is thrown into the Arctic Ocean, Harme will need to remember the detective he used to be because someone is going to pay for that murder – but whether or not the right person pays depends on whether Harme can beat the clock he isn't supposed to know is ticking.