>> reporter: you know, i have covered the disappearance of madeleine mccann from the beginning. i arrived in portugal the day after she went missing. to me, her parents now seem as shell-shocked and devastated as they did in the early days. they say madeleine's twin brother and sister talk about how when madeleine comes home they will spend time together. without the two little ones, the parents say life would have been unbearable. >> all right. kier simmons in london. thank you. >>> up next, neck and neck. zenyatta's exciting photo finish that ended her nearly perfect career. that's right after this. that's . [ monkey screeches ] ♪ [ male announcer ] a bath becomes even more pleasurable when you know that your water is being heated in an environmentally conscious way, while saving you hundreds of dollars on your water heating energy bill. introducing the geospring water heater from ge with advanced hybrid technology. heating the water in your home any other way is just going to seem primitive. ♪ is just going to seem primitive. [scraping] [piano keys banging] [scraping] [horns h

is a good idea or not. >> we'll get to that but first there is a renewed focus on the case of madeleine mccann english girl who vanished more than three years ago in portugal. erica hill is here with the latest. good morning. >> good morning. madeleine's disappearance set off an international search but when few clues emerged the case went cold. now her parents are making a an impassioned renewed plea for authorities to reexamine their examination. days before her fourth birthday madeleine mccann disappeared from the apartment where her family was vacations in portugal. her parents had gone to it dinner leaving their three sleeping children alone. the story immediately captured headlines and hearts around the globe as her terrified parents pleaded for their daughter's safe return. >> please give our little girl back. >> three and a half years later indicate an jerry mccann are still searching. in an new interview with britain's "sky" tv demanding more help. >> madeleine's a british citizen. >> reporter: launching an online pe tigs of a full online review of the velgsgation. when the initial se