. >> marking a somber anniversary. the father of polly klaus speaks to abc 7 news after 20 years. >> and uncovering mysteries under the ocean. cameras scientists are using to explore an under with ther volcano and creature that's live in it. >> we're in the business of saving lives. >> an emotional san francisco fire chief talks about this tragic apartment fire that killed three againation againations -- generations of the same family. a 1-year-old girl, her father and grandfather. >> the fire broke out around 1:30 this morning at 18th avenue in the sunset neighborhood. heather? >> some grim-faced firefighters were here for maybe about an hour late this afternoon debriefing on what happened here. the authorities identified the victims. the cause is still under investigation what happened here was deemed an accident. fire officials say one contributing factor might be the hope was sell sealed with new double paned windows did that did not pop out despite the heat. >> everybody is hurting a little bit this morning. that is not what we're in the b

today we sat down with mark klaus who has never run from the murder he told us it has given meaning tois life. >> i don't forget, and i don'ting forrive. >> -- forgive. >> mark klau is moved on from pro found personal tragedy, a person with reminders on walls and shelves of his home and heart. >> m my mind she's a 12-year-old girl. i think about high school graduation. getting married. starting her own career. having her own children. of of course i think about those things. >> especially now. october 1 will mark the 20th anniversary of her abduction from a slumber party in her bedroom, an abduction in front of friends that led to her death. >> he had a knife and threatened them. he tied them up and gagged them. and then, he left with the victim. >> polly may have been the perfect little girl next door. maybe that is why petaluma came out in force to look for her. not tens of people or hundreds but thousands. >> if it was our daughter... that we, you know we'd want people to be out looking for her. >> bring her back. don't hurt her. bring her back. >> it was not to be. and painfully so

. >> marking a somber anniversary. the father of polly klaus news after 20 years. >> and uncovering mysteries under the ocean. cameras scientists are using to explore an under with ther volcano and creature that's live in it. >> we're in the business of saving lives. >> an emotional san francisco fire chief talks about this tragic apartment fire that killed three againation againations -- generations of the same family. a 1-year-old girl, her father and grandfather. >> the fire broke out around 1:30 this morning at 18th avenue in the sunset neighborhood. heather? >> some grim-faced firefighters were here for maybe about an hour late this afternoon debriefing on what happened here. the authorities identified the victims. the cause is still under investigation what happened here was deemed an accident. fire officials say one contributing factor might be the hope was sell sealed with new double paned windows did that did not pop out despite the heat. >> everybody is hurting a little bit this morning. that is not what we're in the business of doing