detectives learned that car outside of nicky's house did not belong to him. still, they brought him in for questioning, hooked him up to a polygraph and asked him point blank if he killed nikki. poand the public refer determind that he was not deceptive in answering questions. >> i want to find the killer, i want them to know that it was not me. >> so that was it for joe? >> it appeared that joe was not involved in the death of nikki whitehead. so, two boyfriends and two dead ends. >> you know, in addition to robert head and carter, could it have been a stranger? did you look into that? >> we did. >> they still wanted to know who owned another car, a red one that was also seen in nikki 's the day of the killing. it did not take long to find out, it belonged not to a murderer at all, but a friend. >> nikki had missed a hair appointment with this friend, the friend had come by, knocked