sergio martinez, the hunter who pleaded guilty to "setting timber afire" in the national forest, did not set the fire that trapped the roach family. they were caught in a smaller blaze known as the paradise fire. investigators believe that, too, was arson, but no one's ever been charged. today, san diego county does have an early warning system in place. officials say it has already saved lives. that's all for this edition of "dateline." i'm lester holt. ashlea was a wild and funny texan who everyone seemed to love. >> caring, loving, compassionate. >> so why did she have this strange premonition? >> ashlea always felt like she was gonna die young. >> the call came on black friday. >> she said, "ashlea's apartment's on fire." >> when the coroner pulled up, my heart broke. >> and this fire was no accident. >> they had conducted surveillance at ashlea's apartment. >> reporter: they're going back to the place where ashlea worked. >> yes, sir. >> they were going after tens of thousands of dollars. >> but was money the only motive? or was there something else? >> there were a lot of rumor