family continued to search for answers. >> and then in april of 1997, i got a phone call from mary bennettr: cathy's mom. it would be their first conversation of many. mary told daron how she'd seen reports about a new program in orange county centered around investigating cold cases. cathy's case had specifically been mentioned. >> and mary said, "if they're going to use my daughter's murder as publicity for their program, by all means they're going to work it. and it's your job to make sure that that happens." >> reporter: there were no new murders in placentia in 1997, allowing daron to focus his full attention on this old one. >> and because you have -- you have mary bennett and the family, who's persistent, who are very well known and very well liked within the community, it did give me a lot of leverage when i went forth and said, "hey look, i need time to concentrate specifically on this case." >> reporter: daron pored through the files and hunted down new leads. and then a tip came in, seemingly out of nowhere. >> so a guy from a repossession company calls the police and says, "hey

still call to mary bennett, reading the bible and waiting for dawn, while the whole wide world is fast asleep. >>> this is a tragedy on top of a tragedy now. >> it happened so quickly. their parents in the backyard spa. their mom in trouble. >> my dad just panicked. >> a sudden slip. a fatal fall. >> you're losing your mother. you're watching her go right in front of you. >> someone else was watching her too. >> it was scary. the look on his face was almost undescribable. >> what had she seen? was this drowning really an accident? >> she's got a huge gash on her head. something like that is not consistent with just falling down. >> a husband and father is suddenly under suspicion. >> he's crying and we're crying. he said, they think i hurt mom. >> three daughters stand by their dad. and one prosecutor stands firm. >> he's holding his wife of almost three decades under the water. my job is to get justice for cristi hall. >> was it murder? hello and welcome to "dateline extra." i'm craig melvin. a young woman peers into her neighbor's yard and sees something for a few seconds. a man, a w

mary bomb. julian mcbain. lawrence ray bennett. philip vernon bergstrom. david berkley. ssell your l. noel, battia. kenneth john. diane. >> stephen john bowen. john buckley. paula marie buckley. nicole, francis bowyer, nicholas bright, daniel solomon browner. colleen renÉ bruner. timothy guy berman. michael warren buser. warren max busear. stephen butler. william martin catin. >> louiseeron. valerie kennedy. timothy michael caldwell. carlson, richard anthony coley. eric michael kocher. jason michael kocher. gary leonard. bridget, sean, thomas concanon. >> theodorea cohen. tracy jane corner. willis, patricia mary quayle. john bennink come, william manion daniels, gretchen, shannon davis, gabriel dellarepa. frank dinardo. peter thomas stanley dicks. >> scott marsh corey. david scott gorski. michael joseph doyle. edgar howard eggleston. charles thomas fisher 4 rebecca. clayton flick. john patrick flynn. arthur, robert jared fortune. stacy denise franklin. paul matthew stephen friedman. >> cara reagan. james ralph buller. robertin, gabor, alan gallagher, matthew cannon gannon

wednesday, worked out today and is we had some bay area college hoops tonight st mary's on the road facing santa clara --randy bennetthe gaels trying to stay perfect in conference play --st. mary's up by 10 -- calvin hermanson... corner triple 50-percent from three... he had 14 points, 5 rebounds --jock landale...averaging a double- double finishes with 19 points and 10 rebounds gaels win 81-57 next thursday they'll gonzaga, who are still undefeated as well --we head up north to washington before the game stanford freshamn daejon davis... talking to his high school coach before tip off. -- the cardinal under classmen have been playing really well... kezie okpala... takes it to the rack... scores 21 points off the bench -- after trailing at the break -- dorain pickens hits a triple senior guard... 28 points, 7-10 3pt --stanford wins 79-70 the cardnial are tied for first place in the conference -- cal at washington. wyking jones and the bears hoping to avoid their third straight conference lost -- justice sueing the only bright spot for cal this season drops 27 points on the huskies... a new career high for the freshma