"i have spit at shirlene. i have yelled at shirlene.nd, evidence she left for you to find? >> yes. >> and suddenly the sisters truly believed their mom was sending secret clues that almost screamed "open in case of death. " attempting to solve the mystery, they found a willing ally in detective cambra. one plan they came up with together? secretly recording a phone call with ken. tammie made the call from the police department. the strategy was for tammie to act friendly, supportive. >> hello. >> ken? >> yeah. >> hey, it's tammie. >> ken told tammie he was deeply concerned for shirlene. >> i love her. it's not the same without her here. i miss her very much. >> but ken also said he was suspicious of tammie and her sister. >> the feeling i'm getting is like -- i'm feeling like you're going to plan on ganging up on me. and it sounds like you're going to maybe sue me for manslaughter or something, or murder. >> still, he spoke with tammie at length about the day. he said shirlene told him she took pills and seemed suicidal. >> she said she

>> we'll get to the judges with their picks in a bit but shirlene, let's come to you. they both have different qualities that make them fantastic. there's a little different style in the crust here. this is going to be really tough. >> okay. all right. to see who will take the golden pizza cutter in round one of our united states of pizza competition. judge, are you ready? get your paddles ready. shirlene, your pick? pressure is on. >> started this off with saying i'm a pizza purist. it's going to be village pizza. >> okay, one for village pizza. >> don darryl? >> my thoughts are with unregular. >> unregular. >> jason, it is all coming down to you, tiebreaker. >> it was dough-to-dough but i have to say unregular pizza. >> amazing, thank you to our judges. >> oh, yes. >> give them props for being awake and alert at this time. >> i love it. congratulations. you get our golden pizza cutter. now, i actually have a little long island over here too, forgive me if it's out of place, a golden pizza cutter is coming in. congratulations to you. there you go. there's the cutter a

hey there, shirlene. >> reporter: hey, guys. at 5:00 a.m. to sign up. they're officially signed up and now they are on the world's greatest waiting list. hoping to be the match for someone who needs it. >> i know you can barely hear us shirleen, but is it true they're -- there are not even classes today, that these students came in on their own and there's no school? >> reporter: robin, when i say rallying the troops, i mean it. school is closed, and they came through for us. look at that. >> i know you are proud of your alma mater and we're proud of you. thank you so much, shirlene. we'll check with you a little bit later. >> we cannot wait for that. more of that ahead. >>> but first, we begin with president biden's trip overseas after his surprise visit to kyiv, one year after the war in ukraine began. the president is meeting with our allies and we're going to go back to our senior white house correspondent mary bruce in warsaw, poland, good morning, again, mary. >> reporter: good morning, michael. well, the president is gett