Complete Monster/Detective Conan


 * Several of the murder victims in Detective Conan were killed because they crapped on their killers or their friends/families in the past, BIG TIME. Listing them all is obviously a suicidal mission, but a special mention goes to Daisuke Torakura, the eccentric horror novelist who gets to marry a beautiful local girl with a particularly sadistic Scarpia Ultimatum and ruins the life of his ghost writer.
 * In an episode in the second season, Heiji/Harley tries to beat Conan at a murder mystery. The banker and victim of the case was this, and he was killed because he ruined and forced to suicide his best friend just to get his hot (and pregnant) wife. Said wife was so disgusted once she found out, that she pretended to lose the baby girl but secretly sent her to a convent to keep her away. Several years ago, the girl came back and started working as a maid for the banker, not knowing what her relationship with the family was. When the wife found out the banker was planning to do to her daughter and her boyfriend what he'd done to his old friend just to get at her...well, you see what happened. (He wasn't aware at first, but when she told him, he simply brushed it off.)
 * Yutaka Abe/Mark Newman on the episode "Flames of Confusion". Most perps on this show usually have a motive that the audience can sympathize with and show regret at the end, but not this guy. He killed his friend from college 20 years ago for the insurance money--don't ask how he had a policy. He used his company and employees to try to build the perfect alibi. Everyone thinks he's suspicious. Even Detective Mori/Moore, who usually suspects the wrong guy, is right on the mark, but no one is able to solve the case. And when Conan blows open his case anyway and confronts him in the airport parking lot, where Abe is trying to flee the country with his money, Abe attempts to murder Conan brutally, but Conan's soccer skills win the day anyway. Oh, and after he's arrested, he angrily condemns the 'brat' who caught him. Basically, when this guy is first interviewed for the case, he had a completely inappropriate tone for his long-time friend just dying, and when Conan finally catches him, his facade drops and he almost looks, sounds, and moves like a real monster.