NEW ZEALAND. THANKS, ROBIN. >>> WE TURN TO THAT BOMBSHELL TESTIMONY IN THE DOUBLE MURDER TRIAL OF ALEX MURDAUGH. A CLOSE FAMILY FRIEND TESTIFYING HE'S POSITIVE HE CAN HEAR ALEX'S VOICE IN THE BACKGROUND OF A VIDEO TAKEN BY HIS SON MINUTES BEFORE HE AND HIS MOTHER WERE KILLED. EVA PILGRIM COVERING THE STORY WITH DETAILS. GOOD MORNING TO YOU, EVA. >> Reporter: IT WAS AN EXPLOSIVE DAY IN COURT. A CELL PHONE EXPERT TESTIFYING THAT ALEX MURDAUGH'S CALL LOGS FROM THE DAY LEADING UP TO THE MURDERS WERE MISSING SAYING IT APPEARS MURDAUGH DELETED THE DATA AND THAT WAS JUST THE BEGINNING OF THE BOMBSHELL MOMENTS. ALIBI BLOWN. >> GET BACK. >> Reporter: THIS 58-SECOND VIDEO FROM HIS OWN SON DIRECTLY CONTRADICTING HIS STORY. THE STATE SAYING IT PLACES THE DEFENDANT AT THE MURDER SCENE MINUTES BEFORE HIS WIFE AND SON WERE KILLED. IN THE VIDEO YOU CAN SEE HIS PAUL GOING INTO A PEN ON THE FAMILY'S PROPERTY TO CHECK ON A FRIEND'S DOG. IN THE BACKGROUND, YOU HEAR OTHER VOICES. >> HEY. HE'S GOT A BIRD IN HIS MOUTH. >> HEY, BUBBA. >> IT'S A GUINEA. >> IT'S A CHICKEN. >> COME HERE, BUBBA. >> Reporter: MURDAUGH CLAIMED HE DIDN'T GO TO THE FAMILY'S KENNELS THAT NIGHT UNTIL HE FOUND HIS WIFE AND SON'S BODIES. HE APPEARED EMOTIONAL IN COURT AS THE VIDEO WAS PLAYED. CLOSE FAMILY FRIEND ROGAN GIBSON WHO WAS SUPPOSED TO RECEIVE THAT VIDEO SHOWING HIS INJURED DOG TELLING PROSECUTORS HE HEARD ALEX IN THE FOOTAGE. >> WHAT VOICES DID YOU HEAR? >> PAUL'S, MISS MAGGIE, MR MR. ALEX. >> HOW SURE ARE YOU NOW? >> POSITIVE. >> 100%? >> THAT'S CORRECT. >> Reporter: SNAPCHAT VIDEO PAUL SENT THAT EVENING ALSO PLAYED FOR THE FIRST TIME IN COURT SHOWING ALEX AND PAUL ON THE PROPERTY AROUND 7:00 P.M. ALEX SEEN IN DIFFERENT CLOTHING THAN WHAT HE WAS WEARING WHEN LAW ENFORCEMENT ARRIVED AFTER THE MURDERS. >> THAT SPEAKS TO SOMEONE WHO MAY POTENTIALLY HAVE CHANGED CLOTHES BECAUSE IT WAS IMPLICATING THEM IN SOME WAY, SOME SORT OF KNOWLEDGE THAT THE POLICE WOULD SEE SOMETHING, GET SOMETHING OUT OF THE CLOTHING. HIS FAMILIARITY WITH THE LAW WOULD GIVE HIM THAT INFORMATION SO I THINK THAT WAS A REAL BLOW. >> Reporter: MURDAUGH'S TEAM PAPERING A PORTRAIT OF A HAPPY FAMILY. ♪ HAPPY BIRTHDAY TO YOU ♪ >> ALL RIGHT. >> Reporter: PLAYING THIS NEWLY REVEALED VIDEO OF ALEX'S BIRTHDAY CELEBRATION JUST WEEKS BEFORE. PAUL SEEN BRINGING HIM A CAKE. >> THANK Y'ALL SO MUCH. >> THANK YOU, BABE. >> HOW WOULD YOU DESCRIBE PAUL'S RELATIONSHIP WITH HIS FATHER? >> IT WAS AN AWESOME RELATIONSHIP. >> WHAT DO YOU MEAN BY AWESOME? >> JUST KIND OF SEEMED LIKE PAUL WAS THE APPLE OF HIS EYE. >> AND FROM YOUR OBSERVATION CAN YOU TELL THE JURY WHAT YOU OBSERVED OF ALEX'S RELATIONSHIP WITH MAGGIE? >> I THOUGHT THEY HAD AN AWESOME RELATIONSHIP AS WELL FROM EVERYTHING THAT I COULD SEE. >> CAN YOU THINK OF ANY CIRCUMSTANCE THAT YOU CAN ENVISION KNOWING THEM AS YOU DO WHERE ALEX WOULD BRUTALLY MURDER PAUL AND MAGGIEY. >> NOT THAT I CAN THINK OF. >> Reporter: IN THE FINAL MOMENTS OF COURT SOME MORE FIREWORK, THE STATE INTRODUCING A POSSIBLE MOTIVE. GRILLING A WITNESS ON IF HE KNEW ALEX MURDAUGH WAS CONFRONTED ON THE DAY OF THE MURDERS ABOUT MISSING FEES FROM HIS LAW FIRM. THE DEFENSE OBJECTING. THIS MORNING THERE WILL BE A HEARING TO DETERMINE IF THE EVIDENCE IN HIS ALLEGED FINANCIAL CRIMES C