isaiah never said anything like, "i killed halee rathgeber." >> reporter: so if isaiah didn't kill halee, who did? the defense pointed to thaddious rice, the man she suspected of killing his 10-month-old. thaddious pleaded not guilty, had he been worried halee had evidence against him? >> she knew information about the suspicious circumstances of jaxson wheeler's death. he and jordan were the last two people to see halee, other than isaiah, we believe, based on the information that we were provided in discovery. and it just seemed curious to us that for some reason they weren't pursued. >> reporter: and according to the defense, there was other evidence that showed isaiah could not have killed halee. after halee's cell phone stopped sending a signal just before 11:30 on the night she died, it had mysteriously turned on about four hours later and pinged off a cell tower near the soccer field. when that happened, cell phone data showed isaiah was miles away. >> at the time that her phone came back on and started traveling it was nowhere near isaiah hagan. in fact, he was in a different cou