maliek?"actually." >> reporter: in an interview room at the sheriff's office, the detective asked dolores about the night of the murder, if she was in maliek's apartment, and, if he was with her. >> she admits that she was there that night. >> reporter: what happened at maliek kearney's house? >> she was in the living room, and he went to bed. as far as she knew he was there the whole time. >> reporter: was this a sexual relationship? >> she said that they had been intimate, you know, for several years. >> reporter: so she's the long-time paramour. >> they definitely had a long relationship. >> reporter: the detectives now knew one thing for sure after talking to dolores delgado, maliek kearney had lied to them. about being faithful to karlyn for starters. >> do you have a girlfriend now? >> no. >> reporter: but most critically, about what happened the night of karlyn's murder. >> didn't go out monday night, go anywhere, talk to anybody? >> no, i mean, i stayed home, text on my phone. if you h