her name was martha ann. >> was he crazy about martha ann?> yes, he was. >> he was really smitten? >> yeah. >> how close were the two of them? could you tell that? >> very. >> they seemed very close. >> very much in love. >> as much as we knew them, they were -- they always looked out for each other. >> it was a real love match. >> yes. >> martha ann had two sons. >> i always respected my mom. >> she was very charming. highly intelligent. >> shawn was adopted as a baby, met jen as a teenager, and she became his wife. where shawn was from was not discussed at home. but then he had martha ann, the only mother he'd ever known. >> a mother is the sun and the moon and the stars to a little kid. did it feel like she was? >> i was always told since a young age that the only people you can trust completely are your parents. >> in the mid 90s shawn's mom, martha ann, was going through a painful divorce. and then fell for the detective, bob. >> bob was very down to earth, and he taught me a lot of things. >> like what? >> how to be a man. how to be a r