person. the supervisor ask to interview a girl named crystal. we didn t really have any idea who she was. blood all of the floor. i saw blood up the wall. she told us what you start cleaning up? i started picking things that were blood splattered. this woman knew about the murder, covered up. the things that were thrown into the fire by me or the belongings from kelsey s house. she could have stopped this from happening. he had a hold on her that he totally exploited. this whole thing is crazy. it took my breath away. was there any blood on the tv, do you remember? yes, there is blood on the tv. okay. there was blood on the chairs. there is blood on the table. there was bloody on the hobby lobby bag sitting there. reporter: you re witnessing something highly unusual. a woman at the center of a murder investigation reconstructing the scene of the gruesome crime. can you tell me what you saw in here and what you cleaned up? there was a lo