The dark waters of Main. Bieber O.

This young beautiful woman, Kristina Mattern, is truly in love with Rolf banker, which is the private detective Max Wunderly convinically convinced. And it's not in her eyes, full of tears and tender sadness. It turns out that two years ago, Christina gave Rolf her priceless diamond so that he could lay him and correct his financial affairs. How much fidelity, trust and desire to protect her lover from trouble!

but did not protect her in this act.

In broad daylight, in the very center of Frankfurt-on-Main, the banker is killed by two shots at point blank range. The unfortunate Christine instantly becomes both lonely and a beggar. She has no money, except for the missing diamond, she had difficulty scrapping on a private detective. The detective of Wunderlich soon finds out that the killer is a young, puny blond in black glasses. It seems to be a serious clue. But then the news comes that the wife of the banker, Frau Brigitte, will now inherit ninety percent of the bank’s assets, which was headed by her late husband. The investigation seems to have come to a dead end...