Before Bryan Kohberger was sentenced to spend the rest of his life in prison for the gruesome murders of four University of Idaho students, he battled a brutal drug addiction. During a recent sit-down with the New York Times, his sister Mel Kohberger revealed that Bryan, 31, was bullied as a teenager and regularly struggled deeply with his sense of self worth. Following these experiences, he developed an addiction to heroin that sent his life into a downward spiral.