where goodman and his partner, detective sergeant krista mattice, sized him up. his name was chris jackson. >> how did he present? >> he was calm. he was crying. he was upset. he was mad. >> reporter: where was he that night? chris said angila drove him to work at wal-mart. dropped him off before 11 p.m. >> and i kiss her. and i say "i love you sweetheart, drive safe, have a good night." >> reporter: angila was nervous, he said, afraid to be left alone. >> why did he say she was anxious during the night? >> the night before she thought that she had heard somebody messing at the front door of the residence. she felt she was being watched. >> reporter: so, said chris, he called and he texted her. repeatedly. but after 2 a.m., he said, she didn't pick up when he called. >> and he figured she had fallen asleep. >> reporter: but no. she wasn't sleeping. but who killed her? and why? when chris first arrived at the police station, they let him make a phone call. it was obvious he had his own suspect in mind. >> richie is probably the -- piece of -- who did it. god, i --