A married doctor with a penchant for infidelity is treacherously shot! After a celebration with all the employees of his medical practice, Dr. Menno Beermann is found dead in his holiday home. Apparently killed with his own weapon. When detectives Wiebke Jacobs and Evert Brookmer from Aurich begin to investigate, the first picture that emerges is that of a Biedermann: a happy husband and father, a good doctor and employer. But then it turns out that he had a penchant for infidelity - and his wife can get quite angry. So did hurt feelings lead to a murder? But his license to practice medicine was also in jeopardy, because there were several charges against him: allegedly for false and. unnecessary treatments. The claims for damages were considerable. Did someone take the law into his own hands because he believed that he could not enforce his demands?