survived, nanette and her two children might have lived very well indeed. and then bill's daughters noticed something odd about his books. >> i noticed in one of his business accounts a $250,000 check that was written. >> that's a lot of money. >> a heck of a lot of money. >> reporter: the check dated december 14th, one day before bill was murdered, was made out to nanette johnston trust. you saw the signature? >> yes. >> did it look like your father's signature? >> no. and i showed it to the police. >> reporter: detective voth didn't like the looks of it either. >> hello? >> oh, hi, nanette. this is jenny. >> reporter: the detectives told the daughters to give nanette a call and record it. >> well, first of all, a lot of checks -- there are a lot of times i sign for him on many things. >> uh-huh? >> with his permission. >> he gave you permission to sign his name? >> oh, yeah. i've signed his name on many things. >> huh.