A doctor arrested in Germany over patients’ deaths is now suspected of 10 killings German investigators say a doctor in Berlin who was first arrested in August on suspicion of killing four elderly patients is now suspected of killing a total of 10 patients and, in five cases, trying to cover up the evidence by starting fires abcnews.go.com/International/wireStory/doctor-arrested-germany-patients-deaths-now-suspected-10-118689741