returning now to mystery on the mississippi. >> curtis lovelace had seen plenty of interrogation videos during his career as a former prosecutor. in the summer of 2014, for the first time in his life, curtis was the one in the hot seat. >> you have the right to remain silent. >> anything you say can and will be used against you in the court of law. you are a lawyer and the number 1 rule is you don't talk to the police without having a lawyer present. but you talk. >> i wanted to answer their questions. i thought they wanted to know the truth. >> she indicated she did not feel well. >> on the valentines morning, cory was nursing that bad cold . >> i walked back upstairs with her. she climbed into bed. >> he described leaving the house then coming home, only to find his wife dead in their bedroom. >> she was cold and stiff and i recall her hands being -- something like that. >> other details surrounding the death seem to elude curtis. >> i don't remember anything significant. >> you said you went to bed together? >> yeah. i believe we did. it's been a long time. i guess it's possible i wo

christine lovelace had been a burned enter new shop baking pies. curtish. >> i just knew he was going to be there, and i had a notion he would bring me fried chicken that day. lunch came and went. >> no curt. >> a few blocks away he stepped out of his law office. he was on his way to the pie shop. >> as i was walking to my car, there was a gentle man in a suit waiting for me. >> it was detective gibson, and he was armed with an indictment from the grand jury. he was there to arrest curtis for the murder of cory lovelace. he said what? >> he said my wife died in 2006. >> what did you think of that? >> not the reaction for what i was expecting. >> curtis lovelace never saw coming. >> told me to put my hands behind my back and he put me in handcuffs? >> what was going on. >> i don't know. i remember hearing murder and using the word wife. i was not aware that there was an investigation. >> you were blindsided. >> totally blindsided. >> because no one had questioned cory's death before. even the police concluded she had died of natural causes. at the pie shop

. >> curtis lovelace, life interrupted. , life interrupted. >>> this sunday, great expectations. vice president kamala harris and former president donald trump are set to face off on the debate stage in philadelphia in what could be a pivotal moment for both campaigns. >> donald trump wants to take our country backward. >> this is a woman who is dangerous. >> how will the debate impact the race. steve kornacki breaks down the latest polls. >>> plus, high school horror. >> no matter where you are, you're not safe. >> i never thought it was going to happen to me and it did. >> after a school shooting in georgia, the issue of gun violence returns to the political conversation. >> it doesn't have to be this way. >> i don't like that this is a fact of life, but if you're -- if you are a psycho and you want to make headlines, you realize that our schools are soft targets. >>> and binary choices. former republican congressman liz cheney and her father dick cheney become the latest high-from file republicans to endorse kamala harris. >> there's never been an individual in our country who