. >> reporter: andrew dixon convinced his father is innocent. >> they're trying to prove him guilty, and he's fighting for his life. i mean, it's just terrifying and just so sickening. >> reporter: the man tasked with putting andrew dixon's father away, a hard-charging texas district attorney named matt powell. >> mike dixon's running the show and he orchestrated this whole thing. >> many people make the argument that mike dixon never laid a hand on dr. sonnier. >> he's just controlling the -- dave shepard's just another instrument for mike dixon. >> reporter: and that instrument dave shepard has agreed to testify. pitted against his friend mike dixon to avoid the death penalty. >> this is the oldest story in the book. this is vengeance. this is revenge. this is pride. in courtroom 72 of the lubbock county courthouse the prosecution paints a picture for the jury of dixon as an obsessed, calculating puppetmaster. >> he wanted her to suffer or he wanted her back. he knows what the true answer to that question is. but dr. sonnier was in the way. >> reporter: the pillars of powell's case

time with his family. >> reporter: another son, andrew dixon, remains convinced his father is innocent. >> when you think about the fact that he has to spend the rest of his life in prison without parole, how does that make you feel? >> it's unreal. it's like a nightmare. and it's just always there. always in the back of your mind. everything. >> reporter: remarkably, dave shepard's daughters have accepted both men's fate as justice served. >> i know you guys don't talk to your dad a lot right now. but if you could what would you say to him? >> we're doing very good. we are all okay. >> we're okay without him. >> i think he's where he needs to be. >> reporter: as for the woman at the center of it all, richelle shetina has a warning. >> there are real sociopaths and psychopaths that walk amongst us. they're charming. they sit at the dinner table with you and your children. and sometimes they sleep in your bed with you. they're not capable of feeling love for you or empathy for anyone. when you see that, don't ignore it. get out. run. as fast as you can. shetina has put mike dixon out of

andrew gaither's but pete -- left pinky finger was cut off during the attack and has been reattached. he will join the other two in the hospital -- in jail after he is released from the hospital . >>> deb dixon told deputies that a man got out of a nearby car, pointed a and him and stole his iphone. but not before he hit a parked car. the suspect's mother actually drove up and return the phone. charges are pending against her son. >>> one person has died after a two-car collision near elgin over the weekend. a car crossed into the other lane and hit a toyota pickup. the driver of the chevrolet was not wearing a seatbelt was pronounced dead at the scene. a driver -- the driver and a passenger in the pickup were taken the hospital with nonlife threatening injuries. the cause is under investigation. >>> if you were effected by the water main repair in west columbia over the weekend, you should have water back on. sc dot began making repairs and water had to be cut off. there was a leak developed in one connection when they turned it back on forcing them to repaired again after was repaired. >>> a boil water advisory has been lifted for a different set of west columbia residents. several custome

. >> reporter: a second trial is scheduled, delaying a homecoming for andrew dixon's father, who once lived in this big texas spread with a canyon as his back yard. >> you look so happy. >> he was a good dad.

. >> reporter: the man tasked with putting andrew dixon's father away, a hard-charging texas district attorney named matt powell. >> mike dixon's running the show >> many people make the argument that mike dixon never laid a hand on dr. sonnier. >> he's just controlling the -- dave shepard's just another instrument for mike dixon.

dixon convinced his father is innocent. >> they're trying to proveim guilty, and he's fighting for his life. i mean,t's just terrifying and just so sickening. >> reporter: the man tasked with puttg andrew didixon's faer away, a hard-charging texas district attorney named matt powell. >> mike dixon's running the show and he orchestrate this whole thing. >> many people make the argument that mike dixon never laid a

the nightmare truth is andrew's father is facing capital murder charges and the second trial begins. >> amarillo ctor michael dixon is back on trial. >> reporter: and this time around prosecutor mike powell has a new witness. >> the number one most important thing from this second trial was