YMMV / Law & Order: Special Victims Unit S2 E18 "Manhunt"

• Complete Monster: Darryl Kern is a former soldier discharged for believing that soldiers enjoy killing. Taking that enjoyment to the streets, Kern makes a hobby of raping, torturing, and murdering women, granting him the moniker the "Bowery Stalker". When his hideout is discovered by the police, they discover 18 more bodies of his victims, some which are of children, buried there. Having his assistant Marvin Posey, a mentally fragile man, kidnap a woman and her daughter, Kern kills Posey and then tries to kill his kidnapped victims. By the time of his arrest, Kern had killed at least 30 people.
• Heartwarming Moments: The ending, where Munch visits Sara.
  "I just wanted to tell you. You can turn your lights out tonight."
  (Sara smiles.)
• Tear Jerker: Because It's Personal, Munch takes it hard when Kern fools the police twice, each time leading them to discover a dead victim. The second time, he outright loses his cool. Thankfully, that's when the detectives finally get a break.