the man on the right is matthew roberts. you can see a resemblance. it's pretty striking. 14 years ago roberts who was adopted as an infant tracked down his biological mother. what she told him stunned him. it raised the fact manson could be his father. roberts tried to uncover the truth on his own but didn't get far. so we recently arranged for dna testing to answer the question once and for all. the question he struggled with for so long. to get the truth, however, we needed the help of someone else. manson's grandson. here's miguel marquez. >> reporter: jason freeman, charles manson's grandson, is speaking out for the first time. >> i'm coming out to bury his name. you know, i'm burying it. i broke the third generation curse. >> reporter: the curse which began when charles manson directed his followers called the manson family to carry out horrific murders. today this member of the real manson family says enough. >> i am who i am. you know? i'm not something that he was. >> reporter: the second part of the curse, jason freeman's father, charles mans

. >> reporter: matthew roberts is a haunted man. is he the son, the spawn of charles manson?'s like holy hell, it certainly does seem like it's more than just possible, but probable. >> reporter: roberts, adopted as an infant, had, by all accounts, a normal childhood in rockford, illinois. in 1998 at age 30, he sought out his birth mother, a recluse living in wisconsin, who told him he was conceived in 1967 in san francisco where she met manson at a drug fueled orgy. one account i read of that orgy, there were four men present. >> that's the way i understand it. originally, that's what i was kind of looking at, there was about a 1 in 4 chance. >> reporter: roberts says he wasn't convinced his birth mother knew manson until he began exchanging letters with prisoner b33920. in those letters, manson quoted things only his birth mother would know, stories about her early life, so sure he's manson's son, roberts has twice tried to get a dna match. the test, though, inconclusive. manson's dna sample contaminated. >> unless i see somebody scrape the piece of skin off his ass and bri

. >> reporter: matthew roberts is a haunted man. is he the son, the spawn, of charles manson?like holy hell it certainly does seem like it's more than just possible but probable. >> reporter: roberts adopted as an infant had, by all accounts, a normal childhood in rockford, illinois. in 1998 at age 30 he sought out his birth mother, a rek ucluse living in wisconsin who told him he was conceived in 1967 in san francisco where she met manson at a drug-fueled orgy. one account i read of that orgy, there were four men present. >> that's how i understand it. there was a 1 in 4 chance. >> reporter: robert says he wasn't convinced his birth mother knew manson until he began exchanging letters with prisoner b-33920. in those letters manson quoted things only his birth mother would know, stories about her early life. so sure he's manson's son, robert has twice tried to get a dna match. the test though inconclusive. manson's dna sample contaminated. >> unless i see somebody scrape a piece of skin off his ass and bring it to the lab, i want to know that i know. >> reporter: what is unmis

. >> reporter: matthew roberts is a haunted man. is he the spawn of charles manson? >> it's like holy hell it does seem like it's more than just possible, but probable. >> reporter: robert's adopted as an infant had by all accounts a normal childhood in rockford, illinois. in 1998 at age 30 he searched out his birth mother who said he was conceived in 1967 in san francisco where she met manson in a drug-fueled orgy. >> there were four men present? >> that's what i understand. there was a one in four chance. >> reporter: robert says he wasn't convinced his birth mother knew manson until he began exchanging letters with prisoner b-33920. in those letters manson quoted things only his mother would know. he twice tried to get a dna match. the test, though, inconclusive. the dna sample was contaminated. >> unless i see someone scrape a piece of skin off his ass and bring it to the lab, i want to know. >> reporter: what's not just unmistaken, he looks like manson. both in their 30s. a striking resemblance. the eyes, nose, mouth, and forehead. but it is the way robert speak

. >> reporter: matthew roberts is a haunted man. is he the son, the spawn of charles manson?holy hell, it certainly does seem like it's more than just possible, but probable. >> reporter: roberts adopted as an infant had, by all accounts, a normal childhood in rockford, illinois. in 1998 at age 30 he sought out his birth morguther, a recluse wisconsin who told him she was conceived in 1967 where she met manson in a drug-fueled orgy. >> there were four men present? >> that's what i understand. originally it was a one in four chance. >> reporter: robert said he wasn't convinced his birth mother knew manson until he began exchanging letters with prisoner b33920. in those letters manson quoted things only his birth mother would know. so sure roberts tried to get a dna match and the test inconclusive. manson's dna sample contaminated. >> unless i see someone scrape a piece of skin off his ass and bring it to the lab i want to know what i know. >> reporter: what is unmistakable is not just that roberts looks like manson. here are two photos both in their 30s, a striking resemblance

matthews will sit down with paul later today and have reports at 4, 5 and 6:00. >>> katie couric has been back on the morning shift this week filling in for robin roberts.this morning she talks to eva longoria about the show's final season. >> i'm in a big transition. i'm not married. i thought i would be married at the end of desperate housewives. the show is ending. a lot of chapters are closing in my life. now i'm at a point where i get to redefine who i am. >> longoria called the recent wrongful termination lawsuit against the show filed by her former co-star a stain on the show's legacy. see more of that interview and katie's return to morningses on "good morning america" at 7:00 right after our newscast. i cannot wait to see it. i started watching desperate housewives again they only have two shows left it has all the intrigue, drama and juicy stuff you expect. >> yeah, i think watching the eva longoria interview might be worthwhile. >> for different reasons guys. >> i don't know what you mean. 4:52. back to weather. >> let's take a look at weather. >> he dodged that. ducked right under that. >> just move away from the desk. definitely chilly, goo

contestants will compete for charity those on teenage will include robert gibbs anderson coopers, thomasfriedman kelly o'donnell and chris matthewsnner gives 50,000 bucks to charity. >> great, dan. thank you. so think progress is the name of the site, thinkprogress.org. great work. keep us going. keep us supplied with lots of ammunition for our show every day and faiz shakir, the director. >> editor-in-chief. >> with us every tuesday. one thing that caught my attention, your story about joe walsh and tammy deckworth -- >> go for it. >> i don't know. about five years ago or so i forget which of my books came out and i was doing a reading in silver springs, and at a big bookstore and a woman comes up to me to get her book signed in a wheelchair and i was just struck by her and found out she was from walter reed nearby tammy duckworth and she starts telling me her story. here is this woman, a helicopter pilot in iraq, shot down lost both legs one arm she can barely use and yet she had such spirit. i was in tears talking to her. i was so impressed by her, had her on the show here since then and then she was a candidate for congress a