THROUGH. AND WILL NEWS A BRITISH FAMILY IS DEMANDING JUSTICE AFTER AN AMERICAN WOMAN ALLEGEDLY HIT AND KILLED THE SON IN A CAR CRASH THEN FLED THE COUNTRY. GWEN BAUMGARDNER IS IN LONDON WITH THE PRIME MINISTER IS BOUND TO GET ACTION. Reporter: IT’S BEEN SIX WEEKS SINCE HARRINGTON WAS KILLED NEAR A MILITARY BASE IN ENGLAND. 19-YEAR-OLD WAS RIDING HIS MOTORCYCLE ON THIS ROAD WHEN POLICE SAY THE WIFE OF AN AMERICAN DIPLOMAT CRASHED INTO THEM. ISSUED HAVE BEEN A CLEAR-CUT CASE. SHE WAS ON THE WRONG SIDE OF THE ROAD AND ADMITTED. Reporter: POLICE SAY THEY WERE PREPARING TO ARREST THE 40 TERELL DRIVER FOR SHIFFLET TO THE U.S. UNDER DIPLOMATIC IMMUNITY DESPITE PROMISING TO STAY IN THE COUNTRY. WHAT WE FOUND OUT AFTER HENRY’S FUNERAL THAT SHE HAD GONE. WE KNEW WE HAD TO FIGHT. Reporter: POLICE ARE PRESSURING THE U.S. EMBASSY TO A DIPLOMATIC IMMUNITY IN THIS CASE THE SPOKESPERSON TELLS CBS2’S IN THE GLOBAL IMPACT SUCH DECISIONS CARRY IMMUNITY IS RARELY WADE. BORIS JOHNSON HAS IDENTIFIED THE DIPLOMATS WIFE IS IN SCHOOL US AND SAID HE WOULD TAKE THE CASE TO PRESIDENT TRUMP IF A RESOLUTION ISN’T FOUND QUICKLY. I DO NOT THINK IT CAN BE RIGHT TO USE THE PROCESS OF DIPLOMATIC IMMUNITY FOR THIS TYPE OF PURPOSE. DAN’S PARENTS SAY THEY ARE DESPERATE FOR CLOSURE. WE WANT TO GET HER BACK AND STOMACH KNOWLEDGE MEANT FROM HER THAT SHE’S REMORSEFUL. THEY’RE CONSIDERING LEGAL ACTION WHICH COULD INCLUDE SUING THE AMERICAN GOVERNMENT