that'll get your attention. >>> was valerie mcdaniel a murderous mastermind? i couldn't believe this was happening to my sister. >> what could have driven valerie to do this? she tells her story. and leon tells his when "dateline" continues. we have to be able to repair the enamel on a daily basis. with pronamel repair toothpaste, more minerals enter deep into the enamel's surface. you have an opportunity to repair what's already been damaged-it's amazing. the way you triumph over adversity. and live your lives. that's why we redesigned humira. we wanted to make the experience better for you. now there's less pain immediately following injection. we've reduced the size of the needle and removed the citrate buffers. and it has the same effectiveness you know and trust. humira citrate-free is here. a little change can make a big difference. humira can lower your ability to fight infections. serious and sometimes fatal infections, including tuberculosis, and cancers, including lymphoma, have happened, as have blood, liver, and nervous system problems, serious alle