they moved into this house in bolingbrook.teve carson motto. >> drew came over and said if there's anything i ever needed his garage, like a lawnmower, tool, anything ever need. he said his garage was always open to me. i thought that was very nice. >> very nice, eager to please. that was drew peterson. except, sue says, when mr. nice guy morphed into mr. high, using insults to manipulate kathleen. >> he would say that she is crazy. she was looking like a dog. she was ugly, not a good mom. >> soon, the cutting words became heated arguments. drew's brother and sister in law, paul and norma peterson. >> they were always fighting like cats and dogs. >> you saw it firsthand? >> we saw it firsthand. they were always at each other, and it was always something. >> the end of the nine year marriage came one day in 2001. it came in the mail. >> she called me and she said, i got a letter and it said that she was having an affair and that she was a laughing stock. >> the anonymous letter included this shocking tidbit. drew's other woman