A number of copycat crimes become a possible lead for RoboCop to find his family .
A number of copycat crimes turns out to be unrelated ; rich men competing for publicity out of boredom , reenacting murders by Detroit 's most notorious serial killers .
A number of copycat crimes become a possible lead for RoboCop to find his family , but turns out to be unrelated ; rich men competing for publicity out of boredom , reenacting murders by Detroit 's most notorious serial killers .