love, account for her sins. this grandmother, widow, penitent. what story would she tell? >> the main thing going through my mind is to tell the truth and let the chips fall where they may. >> the truth. such a difficult word. especially when it bubbles up from a past which mary ann mcfarland must have believed was buried forever. >> and where was your husband? >> he was still in my -- in the house. >> men. trouble was there were two, which was the one central fact. the inconvenient truth that caused all the trouble. and might have been forgotten had it not been for this inquisitive d.a. and this long, lean cop, jim wallace, looking on so intently. >> this is a case, a true love story between three people.