A 41-year-old German palliative care physician has been handed a permanent life sentence and ordered to serve additional preventive detention after a Berlin court convicted him this Wednesday of murdering 15 of his patients between 2021 and 2024. In line with Germany’s strict privacy regulations, the defendant is only publicly identified as Johannes M. He was found guilty of the premeditated killings of 12 women and three men, in a case that has shaken the German medical community and sparked widespread public shock.
All of Johannes M.’s convicted victims were between 25 and 94 years old, and all were living with critical illnesses. Court testimony confirmed that while the patients required palliative care, their deaths were not medically imminent when the killings took place. Prosecutors laid out detailed evidence that during routine home visits, the doctor administered lethal, unprescribed combinations of powerful medications to his patients without their knowledge or consent. In multiple instances, prosecutors added, Johannes M. set fire to his victims’ homes in an attempt to destroy evidence and cover up the unnatural causes of death.
The investigation into the killings was triggered by the doctor’s final two murders in July 2024, just days before his arrest. Prosecutors confirmed that within the span of a single day, he killed a 75-year-old man in central Berlin, then traveled to a neighboring district to murder a 76-year-old woman. When he attempted to set fire to the woman’s home to cover his crime, the attempt failed, leaving critical evidence that led to his rapid arrest.
Johannes M. remained silent for the majority of his year-long trial. It was only last month that he broke his silence, confessing to the killings of 12 severely ill patients. He told the court he had convinced himself his actions were justified, claiming he was sparing his victims from ongoing suffering and physical infirmity. “Throughout it all, I thought this was the best thing for everyone,” he said, adding an apology for the profound pain he had inflicted on victims’ families.
However, the guilty verdict this week covers 15 murders, three more than the doctor confessed to, and law enforcement officials warn that the 15 convicted killings may only represent a small fraction of the doctor’s total crimes. Prosecutors are currently actively investigating 76 additional suspicious deaths connected to Johannes M. German media outlets note that if even a portion of these additional cases are proven in court, this will become one of the worst serial killing sprees in modern German history. The defendant told the court he intends to cooperate more fully with the ongoing investigations and upcoming legal proceedings tied to the additional suspicious deaths.
During the trial, family members of the victims delivered emotional testimonies describing their ongoing disbelief and grief. The mother of the youngest victim, a 25-year-old woman who died in 2021, told the court through tears, “She never said she didn’t want to live anymore.” The son of a 72-year-old victim who died in 2024 added that his mother had made concrete travel plans to visit the Baltic Sea with her sister, emphasizing “My mother wanted to keep on living.”
Alongside the life sentence, the Berlin court issued two additional punitive measures: a permanent preventive detention order that will keep Johannes M. incarcerated beyond his base sentence if he is deemed a continued threat to the public, and a lifetime ban on practicing medicine in Germany. The case has prompted new calls for increased oversight of palliative care providers working in home health settings across the country.