Niels Högel: Germany's Deadliest Postwar Serial Killer

Niels Högel is believed to be the most prolific serial killer in modern German history, and the most chilling thing about him is where he worked: at the bedside, in intensive care, surrounded by people who depended on him to keep them alive. A hospital nurse, he was ultimately convicted of murdering eighty-five patients, having admitted that he deliberately induced cardiac arrests so that he could rush in and try to revive them. Investigators believe his true toll may be far higher still.

His case is a devastating example of the healthcare serial killer, and it exposed failures of oversight so serious that they amounted, in effect, to letting a murderer keep working.

A nurse from a nursing family

Högel was born on 30 December 1976 in Wilhelmshaven, in northern Germany, into a family with a nursing background. He trained as a nurse and, around the turn of the millennium, began working in intensive and critical care. Colleagues initially saw him as confident and capable, someone who volunteered readily during emergencies and seemed to thrive in a crisis. That eagerness, it later emerged, masked something monstrous beneath the competent exterior.

The lethal 'game'

Högel's method was as calculated as it was cruel. He injected patients with unprescribed drugs — among them heart medications such as ajmaline, sotalol and amiodarone, along with other agents — to trigger cardiac arrest or circulatory collapse. He would then rush to 'save' them, performing resuscitation in front of his colleagues. Prosecutors said his motive was the thrill and the praise that came with being seen as a hero in the chaos he had himself engineered. Sometimes he succeeded in reviving his victims; often he did not.

Two hospitals, years of death

The killings took place between 2000 and 2005 at two hospitals in northern Germany — first in Oldenburg and then in nearby Delmenhorst. As patient deaths and emergencies clustered suspiciously around his shifts, concerns were raised, but decisive action was slow in coming. Disturbingly, it was later reported that he was allowed to keep working even after suspicions mounted, and that a reference helped him move between institutions — failures that may well have cost additional lives.

Caught in the act

Högel's spree ended in 2005, when he was caught administering an unprescribed drug to a patient at the Delmenhorst clinic. In 2008 he was convicted of attempted murder and received a prison term, and the case might have ended there. But the victims' families pressed for answers, and investigators reopened the inquiry, beginning a painstaking, years-long forensic effort that would slowly reveal the staggering scale of his crimes.

The investigation

A special police commission combed through hundreds of patient files and ordered the exhumation of many bodies to test for the drugs Högel had used. The work was both painstaking and, in many cases, impossible: a significant number of potential victims had been cremated, permanently erasing the evidence. Even so, investigators assembled proof of dozens of murders, and officials described the dawning realisation of the scale as almost beyond comprehension.

Convictions

Högel was first sentenced to life imprisonment in 2015 for crimes established at that stage, and during those proceedings he admitted to far more killings. In 2018 a new trial opened in Oldenburg on around a hundred further counts, and in June 2019 the court convicted him of eighty-five murders of patients aged between thirty-four and ninety-six, handing down a second life sentence. The presiding judge told him that his guilt was beyond comprehension.

The confirmed figure of eighty-five is almost certainly not the full total; investigators have suggested the real number could be far higher, with some estimates reaching around three hundred, though cremations and the passage of time mean the truth may never be known. The Högel case became as much an indictment of institutions as of one man, prompting hard questions about why warning signs were missed and serious reflection within German healthcare about monitoring, drug controls, and the duty of colleagues to act. Above all, it stands as a warning about misplaced trust: patients are most vulnerable in a hospital bed, dependent on the very people who attacked them here.

Frequently Asked Questions

How many patients did Niels Högel kill?

He was convicted of 85 murders and is suspected of killing far more, possibly up to around 300.

Why did Högel kill his patients?

He induced cardiac arrests with unprescribed drugs so he could attempt dramatic resuscitations and be seen as a hero.

How was he stopped?

He was caught in 2005 administering an unprescribed drug; a reopened investigation later revealed the full scale of his crimes.

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