they were supposed to catch her in the act of cheating on chris. >> when we open the door, it looked like there was two people in the bed. and when we pulled off the cover, i notice that was not a person. it was a body pillow. >> but maybe chris did not understand that, said richie. because he went crazy and started stabbing her. >> and i touched her neck to feel a pulse, because she was kind of -- as i touched her pulse, she leaned up and scratched my face. i grabbed her hands, and she was just like, i love you. >> that was why his face was scratched, said richie. and his dna was under her fingernails. anyway, afterward, said richie, he drove chris back to work and dropped him off at walmart. >> where did chris ride? >> in the passenger seat. >> the same spot in the car where that blood was found. angela's blood. >> when we first interviewed you, richie, why did you not tell us this? >> well, one, because he kept threatening my family.