As shown in the show, Dahmer was eventually found guilty of 16 murders.
Just like the show suggests, police found disturbing polaroids in Dahmer's bedroom.
Following a more extensive search after his arrest, found skulls in his closet and severed heads and human body parts stored in his kitchen fridge/freezer.
In a 1992 trial, Dahmer was found legally sane and he was sentenced to 16 terms of life imprisonment, which was a total of 941 years in prison.
As shown in the show, Dahmer was eventually found guilty of 16 murders.