daniel patrick wozniak. >> reporter: ...it takes the jury just two hours to reach a decision. >> we, the jury in the above entitled action, find the defendant, daniel patrick wozniak, guilty of the crime of... >> reporter: daniel wozniak sits emotionless as a jury finds him guilty of murdering sam herr and julie kibuishi, a verdict that but it's not enough for the herr and kibuishi families. >> what he did to sam-- and then, of course, what he did to julie-- it warrants the death penalty. the quicker, the better. >> reporter: just two weeks later, the same jurors are back in the same courtroom for what's called the penalty phase. they will have to determine whether wozniak should be given life in prison or be sentenced to death. tried seven other death penalty cases in his career, says his strategy is simple. >> it is: get kibuishis and the herrs on the witness stand so that the jury can understand their pain. ladies and gentlemen, he knew that sam and julie were loved. now, you get to think about those people, and you get to think about those moms and what they have gone through. and

daniel patrick wozniak. >> reporter: ...it takes the jury just two hours to reach a decision. >> we, ry in the above entitled action, find the defendant, daniel patrick wozniak, guilty of the crime of... >> reporter: daniel wozniak sits emotionless as a jury finds him guilty of murdering sam herr and julie kibuishi, a verdict that is a relief. but it's not enough for the herr and kibuishi families. >> what he did to sam-- and then, of course, what he did to julie-- it warrants the death penalty. the quicker, the better. >> reporter: just two weeks later, the same jurors are back in the same courtroom for what's called the penalty phase. they will have to determine whether wozniak should be given life in prison or be sentenced to death. prosecutor matt murphy, who has tried seven other death penalty cases in his career, says his strategy is simple. >> it is: get kibuishis and the herrs on the witness stand so that the jury can understand their pain. ladies and gentlemen, he knew that sam and julie were loved. now, you get to think about those people, and you get to think about those mo

daniel patrick wozniak. >> reporter: ...it takes the jury just two hours to reach a decision. >> we, the jury in the above entitled action, find the defendant, daniel patrick wozniak, guilty of the crime of... >> reporter: daniel wozniak sits emotionless as a jury finds him guilty of murdering sam herr and julie kibuishi, a rd but it's not enough for the herr and kibuishi families. >> what he did to sam-- and then, of course, what he did to julie-- it warrants the death penalty. the quicker, the better. >> reporter: just two weeks later, the same jurors are back in the same courtroom for what's called the penalty phase. they will have to determine whether wozniak should be given life in prison or be sentenced cases in his career, says his strategy is simple. >> it is: get kibuishis and the herrs on the witness stand so that the jury can understand their pain. ladies and gentlemen, he knew that sam and julie were loved. now, you get to think about those people, and you get to think about those moms and what they have gone through. and you get to assign a weight to that. and that's the

daniel patrick wozniak. >> reporter: ...it takes the jury just two hours to reach a decision. >> we, the jury in the above entitled action, find the defendant, daniel patrick wozniak, guilty of the crime of... >> reporter: daniel wozniak sits emotionless as a jury finds him guilty of murdering sam herr and julie kibuishi, a verdic is a relief. but it's not enough for the herr and kibuishi families. >> what he did to sam-- and then, of course, what he did to julie-- it warrants the death penalty. the quicker, the better. >> reporter: just two weeks later, the same jurors are back in the same courtroom for what's called the penalty phase. they will have to determine whether wozniak should be given life in prison or be sentenced tried seven other death penalty cases in his career, says his strategy is simple. >> it is: get kibuishis and the herrs on the witness stand so that the jury can understand their pain. ladies and gentlemen, he knew that sam and julie were loved. now, you get to think about those people, and you get to think about those moms and what they have gone through. and yo

daniel patrick wozniak. >> reporter: ...it takes the jury just two hours to reach a decision. >> we, the jury in the above entitled action, find the defendant, daniel patrick wozniak, guilty of the crime of... >> reporter: daniel wozniak sits emotionless as a jury finds him guilty of murdering sam herr and julie kibuishi, a verdict that is a relief. but it's not enough for the herr and kibuishi families. >> what he did to sam-- and then, of course, what he did to julie-- it warrants the death penalty. the quicker, the better. >> reporter: just two weeks later, the same jurors are back in the same courtroom for what's called the penalty phase. they will have to determine whether wozniak should be given life in prison or be sentenced to death. tried seven other death penalty cases in his career, says his strategy is simple. >> it is: get kibuishis and the herrs on the witness stand so that the jury can understand their pain. ladies and gentlemen, he knew that sam and julie were loved. now, you get to think about those people, and you get to think about those moms and what they have gone

daniel patrick wozniak. >> reporter: ...it takes the jury just two hours to reach a decision. >> we, the jury in the above entitled action, find the defendant, daniel patrick wozniak, guilty of the crime of... >> reporter: daniel wozniak sits emotionless as a jury finds him guilty of murdering sam herr and julie kibuishi, a verdict that is a rf. but it's not enough for the herr and kibuishi families. >> what he did to sam-- and then, of course, what he did to julie-- it warrants the death penalty. the quicker, the better. >> reporter: just two weeks later, the same jurors are back in the same courtroom for what's called the penalty phase. they will have to determine whether wozniak should be given life in prison or be sentenced to death. tried seven other death penalty cases in his career, says his strategy is simple. >> it is: get kibuishis and the herrs on the witness stand so that the jury can understand their pain. ladies and gentlemen, he knew that sam and julie were loved. now, you get to think about those people, and you get to think about those moms and what they have gone thr

and he, daniel wozniak, was the >> reporter: okay. so when he blurts that out, what's your reaction? >> the immediate reaction was, did i just hear what i think i heard? >> reporter: even for seasoned detectives, the story dan wozniak told was almost beyond imagining. dan said he went after sam first. they drove together to a theater, a place where dan had once taken the stage. dan had told sam he needed help from the attic. >> i said, "you need to bend down and help me lift this thing up," and when he bent down, i grabbed the gun. i shot him once and then he was still alive. he was still talking, saying "i need help." >> reporter: what did he say to you? >> i need help, something hit me. it felt like an electric shock. >> reporter: and then, wozniak said, he fired again. >> he started bleeding. he wasn't moving. he wasn't talking. >> reporter: dan said he took sam's cell phone, th audience. in this video, shot by a cast member's husband that very night, you can see dan and his fianc?e rachel performing in the musical "nine." this was