> reporter: michael's daughters were also worried. they knew very well their father relished being the provocateur. and now the police were swarming"> > reporter: michael's daughters were also worried. they knew very well their father relished being the provocateur. and now the police were swarming" property="og:description"> > reporter: michael's daughters were also worried. they knew very well their father relished being the provocateur. and now the police were swarming">
him." >> reporter: michael's daughters were also worried. they knew very well their father relished being the provocateur. and now the police were swarming their house. walking the yard. looking under bushes and trees. >> i remember feeling that something was going badly with the police. >> reporter: michael called a family meeting. >> he sat down with us and said, you know, "girls, i don't know what's going on, but it seems bad. and i -- i just want you to know i didn't do anything wrong. i didn't do anything." and we said, "of course, dad, we know." >> reporter: but police weren't so sure. they seemed intent on peeling away the veneer of the peterson's marriage. what was going on behind the closed doors in the mansion on cedar street? >> they were asking me questions about kathleen and michael's relationship. and if i knew of anything. i thought they were happily married. she was very much in love with him. >> reporter: but the detectives were beginning to believe the perfect marriage was anything but.