That would be Gary Heidnik.
From Wikipedia:
Heidnik signed his girlfriend Anjeanette Davidson's sister, Alberta, out of a mental institution on day leave and kept her prisoner in a locked storage room in his basement in 1978. After she was found and returned to the hospital, examination revealed that she had been raped and sodomized and that she had contracted gonorrhea. Heidnik was arrested and charged with kidnapping, rape, unlawful restraint, false imprisonment, involuntary deviant sexual intercourse, and interfering with the custody of a committed person.
On November 25, 1986, Heidnik abducted his first victim, Josefina Rivera. By January 1987, he had five women held captive in the basement of his house at 3520 North Marshall Street in North Philadelphia.
The captives, who were all African-American women, were raped, beaten, and tortured.[14]
One of the women, Sandra Lindsay, died of a combination of starvation, torture, and an untreated fever. Heidnik dismembered her body but had a problem dealing with the arms and legs, so he put them in a freezer and marked them "dog food". He cooked her ribs in an oven and boiled her head in a pot on the stove. Police came to the house due to the complaints of a bad odor, but left the premises after Heidnik's explanation: “I’m cooking a roast. I fell asleep and it burnt.”[15][16]
Several sources state that he ground up the flesh of Lindsay, mixed it with dog food, and fed that to his other victims.[17][18] His defense attorney, Chuck Peruto, said that upon examination of a Cuisinart and other tools in his kitchen, they found no evidence of this. Peruto said that he made up the story to support the insanity defense.[19] The defense attorney said that he started the rumor of cannibalism in public and that in fact there was no evidence of anyone eating human flesh.[19]
Heidnik used electric shock as a form of torture. At one point, he forced three of his captives, bound in chains, into a pit. Heidnik ordered Josefina Rivera and another woman to fill the hole with water and then forced Rivera to help him apply electrical current from a stripped extension cord to the women's chains. Deborah Dudley was fatally electrocuted, and Heidnik disposed of her body in the New Jersey Pine Barrens.[16]
On March 23, 1987, Heidnik and Rivera abducted Agnes Adams. The next day, Rivera convinced Heidnik to let her go, temporarily, in order to visit her family. He drove her to a gas station and said he would wait for her there. She walked a block away and called 911. She told the police the story and they were somewhat unconvinced at first. The police made her repeat the story and she told it exactly the same way again. The responding officers, more convinced after they looked at her leg and noted the chafing from the chains, went to the gas station and arrested Heidnik. His purported best friend, Cyril ("Tony") Brown, was also arrested. Brown was released on $50,000 bail and an agreement that he would testify against Heidnik. In part, Brown admitted to seeing Sandra Lindsay's death in the basement while in chains and Heidnik dismembering her.[20]
Shortly after his arrest, Heidnik attempted to hang himself in his jail cell in April 1987.[21]