'Yes, I knew the snooper. I had him to thank for the fact that my wife left me!' A man lies shot dead in the dunes near Spiekerooger Westend. The victim is the Wittmund private detective Arjen Wolthoff. He was on the island on behalf of a suspicious wife who wanted proof of her husband's infidelity. The East Frisian detectives Nina Jürgens and Bert Linnig discover that the detective was involved in a whole series of explosive cases. Did the shadowed husband solve the problem in his own way? Or is someone behind it whom Wolthoff once put behind bars with his research? What the detective didn't suspect was that he had long since ceased to be just an observer, but was himself in the sights ... Notes: New product