35 Serial Killers the World Wants to Forget (2018)

S1E3 Death's Door

Dr. Shipman had long cultivated the persona of a compassionate doctor, all while secretly battling drug addiction and murdering his patients. Meanwhile, Dorothea Puente seemed like a gentle manager of a care home. Therefore, when Detective John Cabrera arrived at her door, it was initially for inquiries, rather than the shocking discovery of the bodies he would ultimately uncover.