During his childhood, Richard Chase began showing signs of disturbing behaviour, and was fond of setting fires and tormenting animals. In his early teens he exhibited more bizarre behaviour, insisting that someone had stolen his pulmonary artery, or claim that his heart would often stop beating. He was diagnosed with suffering from paranoid schizophrenia and sent to a secure hospital to receive treatment, and there earned the nickname 'Dracula' from staff due to his fixation for consuming the blood of animals. By 1976, Chase was was deemed no longer a danger to society, and was released into the custody of his mother. However, he continued to exhibit alarming behaviour and in December 1977, he committed his first murder, killing a man during a drive-by shooting. By January 1978, the unhinged Chase broke into the home of Teresa Wallin, shooting her three times before committing grotesque mutilations to her body and drinking her blood. Four days later he killed and mutilated four people at the home of Evelyn Miroth, leaving behind his bloodied handprints at the scene. He was arrested shortly afterwards, and because of the overwhelming evidence of his crimes he was found guilty and sentenced to death. During his incarceration on death row, Chase was interviewed by FBI criminal profiler Robert Ressler, who wished to gain an insight into why the Vampire of Sacramento committed his gruesome crimes.