long trials, each peopled by witnesses the jury might not think were very credible. people who supposedly heard them say things like we raped and killed the girl. they re not gonna find her. i m going to kill you like i did the girl in florida . the girl i killed was 20. reporter: one witness testified about overhearing a conversation between barr and mcmannis. phillip barr was saying to david mcmannis, i didn t want to kill her. and she overheard david mcmannis respond, she had to die. reporter: not very believable, said the defense attorneys. just people making things up, said barr s lawyer, mark de sisto. we contended that those conversations never took place. reporter: some of those witnesses were inmates, too, snitches. i never met a confidential informant that s gonna inform just because he wants to be a nice guy or a good citizen. there s always something in it for him. reporter: that woman, the star witness found by the cold case team, who said
they re not gonna find her. i m going to kill you like i killed the girl in florida. the girl i killed was 20. reporter: one witness testified about overhearing a conversation between barr and mcmannis. phillip barr was saying to david mcmannis, i didn t want to kill her. and she overheard david mcmannis respond, she had to die. reporter: not very believable, said the defense attorneys. just people making things up, said barr s lawyer, mark de sisto. we contended that those conversations never took place. reporter: some of those witnesses were inmates, too, snitches. i never met a confidential informant that s gonna inform just cause he wants to be a nice guy or a good citizen. there s always something in it for him. reporter: that woman, the star witness found by the cold case team, who said she saw the two men coming and going from tara s house? could it be she made herself believe this over so much of a time to make sure the bad guy goes away? report
and mcmannis say things like we raped and killed the girl. they re not gonna find her. i m going to kill you like i killed the girl in florida. the girl i killed was 20. reporter: one witness testified about overhearing a conversation between barr and mcmannis. phillip barr was saying to david mcmannis, i didn t want to kill her. and she overheard david mcmannis respond, she had to die. reporter: not very believable, said the defense attorneys. just people making things up, said barr s lawyer, mark de sisto. we contended that those conversations never took place. reporter: some of those witnesses were inmates, too, snitches. i never met a confidential informant that s gonna inform just cause he wants to be a nice guy or a good citizen. there s always something in it for him. reporter: that woman, the star witness found by the cold case team who said she saw the
the girl i killed was 20. reporter: one witness testified about overhearing a conversation between barr and mcmannis. phillip barr was saying to david mcmannis, i didn t want to kill her. and she overheard david mcmannis respond, she had to die. reporter: not very believable, said the defense attorneys. just people making things up, said barr s lawyer, mark de sisto. we contended that those conversations never took place. reporter: some of those witnesses were inmates, too, snitches. i never met a confidential informant that s gonna inform just cause he wants to be a nice guy or a good citizen. there s always something in it for him. reporter: that woman, the star witness found by the cold case team, who said she saw the two men coming and going from tara s house? could it be she made herself believe this over so much of a time to make sure the bad guy goes away? reporter: dave mcmannis s attorney, michael bross, said his view those detectives focused on the wr
girl. they re not gonna find her. i m going to kill you like i killed the girl in florida. the girl i killed was 20. reporter: one witness testified about overhearing a conversation between barr and mcmannis. phillip barr was saying to david mcmannis, i didn t want to kill her. and she overheard david mcmannis respond, she had to die. reporter: not very believable, said the defense attorneys. just people making things up, said barr s lawyer, mark de sisto. we contended that those conversations never took place. reporter: some of those witnesses were inmates, too, snitches. i never met a confidential informant that s gonna inform just cause he wants to be a nice guy or a good citizen. there s always something in it for him. reporter: that woman, the star witness found by the cold case team, who said she saw the two men coming and going from tara s house? could it be she made herself believe this over so much of a time to make sure the bad guy goes away?