The Close Call
Dahmer was almost arrested when his neighbor called the police saying that there was a naked Asian boy running through the streets. Because the boy was incoherent when the police arrived the police believed Dahmer's story. Dahmer claimed that the boy was his 19 year old lover. In actuality the boy was only 14 years old. The police escorted Dahmer and the boy home. Because they were getting in the middle of a homosexual domestic dispute the police didn't do a thorough job of looking around Dahmer's home before leaving. If they even did the basic search the police they would've found the body of Dahmer's 12th victim, and saved the life of that teen and four other victims.
Fun Fact: This boy was a brother of the teen Dahmer had molested three years prior.
Arrested
After taking the lives of four more victims Dahmer's luck ran out. Police found a 32 year old man, Tracy Edwards, wandering throughout the streets with a handcuff on one of his wrists. Edwards told the police about a "weird dude" who had drugged and restrained him. The police decided to investigate these claims. Dahmer acted perfectly calm when the police arrived at the apartment. He even offered to go get the keys to the handcuffs. Edwards claimed that the knife used to threaten him was in the bedroom. While trying to corroborate this claim the police noticed pictures of dismembered bodies lying around. After subduing Dahmer and searching the house the police found severed heads and other jarred body parts.