krystal lee kenney knew she'd been caught in a series of lies. ed missing, krystal hired a lawyer and went to colorado for another meeting with investigators. we knew that there was some information that she was going to share with us. we didn't know the exact specifics. this is a very important interrogation. yes. yes. andrea canning (voiceover): and that gave krystal some leverage. before she talked, krystal told them she wanted to make a deal with the local district attorney. before her statement, we didn't know anything. andrea canning (voiceover): jennifer viehman is one of the prosecutors who got the case. she had to provide a full and complete statement about what happened. tell us everything, tell the truth, and come back and testify when it's needed. andrea canning (voiceover): krystal promised to do all that. and in return, prosecutors offered a plea deal, a charge carrying a maximum sentence of three years in prison. did you go into it knowing that it might be unpopular? i don't know that we did. i think we didn't know the extent of how