Where can I watch Murder on Amrum in United States?

Two policemen are stationed on Amrum, a North Sea island on the West coast of Schleswig-Holstein, Germany’ – an elder, and one who is several decades his junior. Life is easy, just that the junior can’t find a wife, because no young woman seems to be interested in the peaceful life on the island. All of a sudden, a wounded lady who turns out to be one of two bodyguard for a threatened witness who lives in hiding on Amrum, bursts into the police station and seeks help from the two officers. I missed some bits of the plot, but somehow, the second one of the bodyguards hiding the witness on the island has been killed already, and the second one, seeking help from the local police, was wounded in the incidence, and then she apparently succumbs, too.