murder, sandra jessee was found guilty. finally that little ball stayed on its track. the key mouse was caught. >> i hope that she rots in hell. i just really do. i'm glad it wasn't the death penalty. i want her to stay there and suffer with all the other miserable people that go to prison. >> what's it feel like to get justice finally? >> oh, it feels good. it feels good, but not complete. not complete. lost a guy. the nicest guy i ever met. >> and for tom dove, he's now retired from the sheriff's department, and at his going-away party his fellow detectives gave him this. it honors his commitment to the jessee case. >> it means more to me than any other plaque or award i've ever received in my life. >> and in retirement tom says he hopes to set up a shelter for stray dogs. the urge to rescue runs deep. >> that's all for this edition of "dateline extra." >>> i'm craig melvin. >> this is "dateline." >> i am being followed. there are threats on my life. i know we're in danger. i know we are. >> it's a riveting mystery that s

of jack jessee.e tipster's information was frustratingly vague, like a riddle, yet another game to be played. there were two killers, though he gave no names. one had a knife, the other had the getaway car. both worked at a big box department store. the man who told the story in the bar that day had been the driver of the car and with the blood money he bought a truck and a sea-doo. but on the question of who was behind the plot, that's when the story named names, two of them. they were sandra's son, tom, the mama's boy jack raised as his own. under the direction of the mastermind herself, jack's wife, sandra. so with that new perspective on the case, dove revisited sandra's old interview. the hours of mostly useless chatter. >> how many times did you listen to that interview? >> at least ten times. >> reporter: and then it jumped out at him. right about here on the tape, sandra is going through slips of paper in her day planner. she looks at one and says -- >> this is my son's friend. >> reporter: l

of jack jessee.reporter: most of the tipster's information was frustratingly vague, like a riddle, yet another game to be played. there were two killers, though he gave no names. one had a knife, the other had the getaway car. both worked at a big box department store. the man who told the story in the bar that day had been the driver of the car and with the blood money heat bought a truck and a ski-doo. but on the question of who was behind the plot, that's when the story named names, two of them. they were sandra's son, tom, the mama's boy jack raised as his own. under the direction of the mastermind herself, jack's wife, sandra. so with that new perspective on the case, dove revisited sandra's old interview. the hours of mostly useless chatter. >> how many times did you listen to that interview? >> at least ten times. >> reporter: and then it jumped out at him. right about here on the tape. sandra is going through slips of paper in her day planner. she looks at one and says -- >> this is my son's

it honors his commitment to the jessee case. >> it means more to me than any other plaque or award i've ever received in my life. >> and in retirement tom says he hopes to set up a shelter for stray dogs. the urge to rescue runs deep. >> that's all for this edition of "dateline extra." >>> i'm craig melvin. >> this is "dateline." >> i am being followed. there are threats on my life. i know we're in danger. i know we are. >> it's a riveting mystery that started in a place of glamour. >> it became a destination for the rat packs. frank sinatra. >> and ended in a murder. >> the heir of this hotel, dead. >> he was the only father i ever knew. >> now, police said she was next. someone in the shadows gunning for her. >> my suspicions are growing and growing by the minute. >> so who was behind all this? plenty of suspects, and plenty of motives. anger, jealousy, greed, someone had 10 million reasons to kill. >> we look back and said my god, i couldn't believe what i saw. >> you're not going to believe it either because in this case there is a final terrifying twist. >> i see the you bar. . >>