saying it was that morning? >> it did not. it just didn't seem to add up. >> reporter: two days after cory's death, her body was cremated, and the case was closed. a 38-year-old woman was suddenly dead for seemingly no apparent reason. >> we assumed that... that her... her eating disorder, that her alcoholism somehow caused her death. and whether it was checked "undetermined" or "natural death" really wasn't something that we were concerned about. >> reporter: life went on. six months later, lovelace started dating erica gomez, who he later married. gomez would become an explosive figure in his second trial. >> his parents knew that he was abusive. that's why they came and got him. his parents probably knew that he killed his first wife.

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>> tonight's "48 hours" will continue.

>> reporter: after his wife cory mysteriously passed away in 2006, it took curtis lovelace less than six months to find love again-- this time with one of his students at quincy university, erica gomez. >> i remember my dad coming up to me and saying, "hey, just so you know, i've been seeing this woman." >> reporter: and what was your reaction? >> i was shocked but couldn't process it at the same time because what 12-year-old's going to process a parent dating? >> reporter: mm-hmm. >> especially so quickly after the loss? >> looking back, it was, i

think, properly characterized as a rebound relationship. i regret starting the relationship. >> reporter: were you lonely? >> absolutely. >> reporter: two years later, lovelace and gomez were married. what was your relationship like with erica? >> not good at all. for some reason, there was some hatred towards my mom, like she was public enemy number one. so i would tell her to stop, like, "it's not fair." and then i would get punished for that. >> reporter: by whom? >> by erica. and what scared me more was that my dad would sit there and watch it. >> reporter: it didn't take long for things to go from bad to much worse. >> it was christmas eve, and my mom's side of the family invited all of us to come for a family dinner. christmas was my mom's favorite holiday, and i was crying because i missed her and i wanted her there. and all of a sudden, erica walks in and says, "we're leaving

now." so i get three to five minutes to calm down, get ready, go to walk out the door, find out that my dad, erika, the boys had left. my family was not happy with them leaving me, and that sat off a bomb. >> reporter: a bomb that blew her family apart. >> it blew up to the point where, when i returned home that evening, miss gomez was throwing lyndsay's stuff out of the house. >> my clothes were in the street. my room is completely trashed. i knew my life was never going to be normal ever again. >> reporter: and that's when you moved in with your mom's mom? >> yeah. >> reporter: lovelace and gomez divorced in 2013. >> i decided that i had made a... a poor decision and tried to end that relationship as peacefully and as amicably as possible. unfortunately, it just didn't...

didn't end as peacefully and amicably as it... as it should have. >> reporter: on the stand, in front of the jury, erica gave the courtroom a sample of her "explosive" personality... >> he threatened me, he controlled me. he is physically abusive to me. >> reporter: ... hurling a variety of accusations against lovelace. >> reporter: did you have any concern that they would buy into what she was saying? >> i didn't have that concern because i knew they were lies.

>> reporter: while gomez was a witness for the prosecution, ultimately her testimony may have done more for the defense. >> i had a hard time believing that the prosecution actually wanted to put her on the stand. >> reporter: also in the courtroom, curtis lovelace's third wife, christine, who, like cory, curtis knew from quincy high. they were married in 2013, just months after his divorce from gomez. >> the behavior was so outlandish. the accusations were so outlandish, the fake tears. >> ( crying hysterically ) >> reporter: so you felt that the jury would have zero credibility with her? >> absolutely. >> reporter: on the stand for the prosecution, detective adam gibson, who would have to defend his credibility and explain just how he found an expert to support his belief that cory was murdered.

>> yes. >> reporter: remember, dr. jane turner sided with detective gibson. after studying the evidence, turner believed that cory had died the night before police arrived. >> reporter: a logical conclusion, except for the fact that when questioned by quincy police, the lovelace children-- except larson-- said they saw their mother alive on the stairs before going off to school the morning gibson believed cory was already dead. when adam gibson came to speak to you, and he asked you "do you remember?," you told him that you did. you remembered seeing her that morning. >> uh-huh.

>> reporter: and maybe, neither did they. >> i had had a story in my head of, i saw her sitting on the stairs, waving to us, "good-bye. i love you," left. and i always said, "oh, it was great. i got to say, 'i love you.'" >> reporter: do you remember seeing your mother that valentine's day morning? >> it's a black hole. >> reporter: you don't know? >> no. >> reporter: how certain are you now that curtis lovelace murdered his wife, cory? >> i'm 100% certain. >> reporter: but defense attorney jon loevy was about to challenge everything detective adam gibson believed about the death of cory lovelace. >> adam gibson decided to create a crime where one didn't exist. you knew that the case had been

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>> tonight's "48 hours" will continue.

>> reporter: prosecutor ed parkinson brings in three forensic pathologists to prove detective gibson's theory that cory was murdered, from world- renowned dr. werner spitz... >> ms. lovelace died, in my view, of suffocation. >> reporter: ...to dr. scott denton, the pathologist first consulted when the case was reopened... >> i would determine her cause of death to be suffocation. >> reporter: ...and finally to dr. jane turner, the out-of- state expert who also believes cory was suffocated. defense attorney loevy tries to discredit turner, saying she never saw cory's body.

and her opinion that cory's body was in full rigor mortis conflicts with the first responders on the scene. >> yes. >> reporter: if cory lovelace's body was pliable, as the defense claims, full rigor mortis had not set in and she did not die the night before. when coroner keller is on the stand, loevy belittles his role in the case. >> you were at the scene of >> reporter: loevy came down hardest on detective gibson. >> no. >> reporter: he grills gibson

about rigor mortis. >> at what point did you learn that you were wrong, that the body was in full rigor at the scene? >> i don't know to this... to this day that i'm wrong. >> reporter: then, a new twist: loevy accuses gibson of withholding evidence-- emails that never made it into the first trial. >> yes. >> reporter: the defense was able to recover those emails. loevy reads one email from a pathologist who told gibson he could never make a good murder case since cory's death had originally been ruled undetermined. >> i believe so. it should, yes. >> you didn't turn it over, did >> i did not.

>> reporter: but gibson testified that he never engaged in any intentional wrongdoing. >> no. >> at this time, we call dr. william oliver. >> reporter: loevy calls to the stand his own noted pathologist, dr. william oliver, who was on the o.j. simpson case. oliver had no doubt how cory died. >> it's my opinion that she died of the complication of alcohol withdrawal known as acute fatty liver. >> reporter: after a battle of the experts... >> reporter: ...the defense gambles that the most believable witness might be the accused killer himself. >> as i approached the bed, i could... i could see... i could see her hands. i could see... i could see her eyes were open. and she was... she was very pale, and there was just... there was nothing there.

cory was dead. that's... that's what i saw. that's what i saw. i told them multiple times that i had nothing to do with cory's death. >> a little bit. >> we've been doing this for two and a half years. >> reporter: and it was remembering the time right after cory died that curtis became most emotional. >> one of our high school classmates who was a pastor, he... he... he's the one that... that... that delivered the eulogy. i wrote it, but i couldn't... couldn't deliver it.

>> reporter: all three lovelace boys continue to support their father. the two oldest testify they saw their mother that valentine's morning. >> i remember getting ready for school, walking back and forth, getting stuff done, sitting on the stairs with my mother and heading out the door. >> how confident are you, >> 100%. >> yes. >> reporter: their sister, lyndsay, was not called to testify by either side. as the trial goes to final arguments... >> beyond reasonable doubt, ladies and gentlemen, is the standard. those words all have a dictionary definition. you all have to apply your life experiences. beyond reasonable doubt doesn't mean probably, doesn't mean maybe. beyond a reasonable doubt. >> what's that mean? well, because really what the case is about is that lady,

cory. that's who the case is about. she died at the age of 38 because a 6'4" former football player standing over her, muffled her and forgot to take the pillow away. >> reporter: the question is whether any jury can sort out what exactly happened that valentine's day morning. do you think we'll ever know what happened with your mom? >> no. if a verdict comes out this round, it comes out. i don't think we'll ever fully know.

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plus, when you switch now you can get a brand new smartphone for free. cricket wireless. something to smile about. so guys with ed...ks... can take viagra when they need it. ask your doctor if your heart is healthy enough for sex. do not take viagra if you take nitrates for chest pain or adempas® for pulmonary hypertension. your blood pressure could drop to an unsafe level. to avoid long-term injury, seek immediate medical help for an erection lasting more than four hours. stop taking viagra and call your doctor right away if you experience a sudden decrease or loss in vision or hearing. ask your doctor about viagra single packs. >> reporter: all murder trials have their clashes between the prosecution and defense...

>> reporter: ...but the spats between ed parkinson and jon loevy were more contentious. >> reporter: after seven days of testimony in curtis lovelace's second murder trial, the jury continues hearing closing arguments. >> reporter: prosecutor david robinson:

>> reporter: and with that, the jury began their deliberations. >> i believe in everything we did, every step that we took. it was a search for truth. >> reporter: then, in little more than two hours, all parties were called back to the courthouse. unlike in the first trial, this time the jury had reached a verdict.

>> we were prepared in our minds, in our heart, for... for whatever the verdict was. >> reporter: so, this time, at least you know there's going to be an answer. >> we know there's going to be an answer, but still knowing that 12 people have our fate and our future and our children's future in their hands is scary. >> we, the jury, finds the defendant, curtis t. lovelace, not guilty. ( audience gasps ) signed by the foreperson and 11 jurors. >> thank you. >> no, your honor. >> all right. >> reporter: more than ten years after cory died and two trials accusing him for the murder of his wife, curtis lovelace,

surrounded by his three sons, walks out of the courtroom a free man. >> we put our trust in god and... and we put our trust in the legal system, and we weren't let down. and so it's a... a great day for our family, a great day for all of our friends, and we're just... we're just thankful. >> curt had absolutely nothing to do with his wife's death, and the jury saw that. >> reporter: prosecutor ed parkinson is clearly upset by the quick decision. >> disappointed. but... but the jury has spoken, so that's the end of it. >> reporter: but just days after the verdict, curtis lovelace told "48 hours" that he and christine still have a lot of questions about detective adam gibson's investigation. >> clearly, i don't appreciate what he's done to... to me and my family. and whatever happens with adam

gibson happens with adam gibson. there's truth, and... and i believe the truth will come out. >> reporter: you intend to pursue how and why this all happened. >> i... i think those are questions we want answered. >> reporter: the family remains deeply troubled by the legal saga now behind them. curtis, christine and the three boys have not spoken to lyndsay since the day curtis was arrested in 2014. >> i... i don't think by our choice. we were advised not to engage in a relationship with people who were possibly against curt. >> reporter: so do you see a day when everyone is together? >> we hope so. we talk about it often. >> reporter: is that on the docket of things to do? >> you know, i... i think we... we'd all like to see reconciliation. i'm just not sure how that happens. it's... it's... it's... i'm sure it's going to be difficult.

>> reporter: for now, lyndsay says she is working to move forward with her own life, inspired by her mother's memory. >> my mom was a beautiful person. she touched so many people. she was passionate. but that's the kind of person she was, and that's the kind of person i try to be. captioning sponsored by cbs captioned by media access group at wgbh access.wgbh.org >> did you turn over 1,400 pages of police reports? >> no.

>> every single thing under the law was turned over. >> we the jury, find the defendant, david mark temple, guilty of murder. >> he was given a life sentence for executing his wife and unborn child. i care about what i do. i care about the process. and this process shook me. >> we're waiting for justice. >> cbsn, live news streaming to you. cbsn. cbs news. always on.

♪ >> live from the cbs broadcast center in philadelphia this is cbs3 "eyewitness news". don't think we showed our fullest potential today. i think we can come back next year and win it all again. >> heartbreaking loss for the villanova wildcats as students vow to support their team. nova returns tomorrow tonight without a championship win. and more sno