The new nurse arrived at the intensive-care unit of Delmenhorst hospital with a solid letter of reference, describing him as someone who worked “independently and conscientiously.” In a crisis, it said, he reacted “with consideration” and was “technically correct.”
Today, Mr. Högel, 42, is considered the most prolific serial killer in the history of peacetime Germany, and perhaps in the world. Officials suspect that as many as 300 patients may have died by his hand over five years starting in 2000.
Today, Mr. Högel, 42, is considered the most prolific serial killer in the history of peacetime Germany, and perhaps in the world. Officials suspect that as many as 300 patients may have died by his hand over five years starting in 2000.

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