home. >> we know he had this router. >> in fact, this cisco chat blog proves he borrowed that router. took it home, months before the murder. >> we know the defendant had one of those 3825 reuters. >> that's correct. >> and you never got that back. >> no, sir. >> cisco doesn't have it back, where did it go? we know it was never returned. >> but it was brad's own computer examined by the fbi that coughed up the most accusing evidence of all. evidence he already lied under oath. >> kids fell asleep about 9:00 p.m.. i probably fell asleep soon after. in his deposition brad said he was asleep with his daughters when nancy came home from that party friday night. but brad's computer said otherwise. he was online until about midnight when nancy came home. >> he's been awake on his computer and when she comes in shortly after midnight we think they argue and a fight ensues