year and a half after kevin mangel had been worried. something else . something extremely rare in a murder trial. a play-by-play of the crime, courtesy of text messages between morgan and steve as it happened. >> we were like, holy smokes, there it is. it is right there. >> the detective said discover the messages during their interrogation when they pulled morgan's phone records looking for leave. >> we knew the exact time of death, we knew how it happened. and so we were floored. >> the text are chilling. four hours before the murder, morgan text steve. are we ready? steve response, yeah, at the shop now. and a half hour before the murder, morgan asks steve about the poison snapple. he drinking it? steve writes back, yeah, kind of. really just waiting for him to bend over. i have a shovel in my hand. morgan's response, nice babe. steve doesn't reply. organ rights, you backing out? >> she then gives him the final talk, you backing out? the text back, it's done. get here now. >> these don't even seem real. they just don't seem real. >>