MY MOM AND SISTER PUT TOGETHER A “SWEET, LOW-KEY” 90TH BIRTHDAY FOR GRANDPA—CHEAP BUBBLY, PAPER LANTERNS, STRANGERS SMILING LIKE WE’D KNOWN EACH OTHER FOREVER… THEN THEY WHEELED “GRANDPA” OUT IN A CHAIR AND EVERYONE STARTED CLAPPING… BUT HE DIDN’T RECOGNIZE ME, DIDN’T SAY A WORD, AND MY HUSBAND’S FACE WENT COMPLETELY STILL—UNTIL HE LEANED CLOSE AND WHISPERED, “GET YOUR BAG. WE’RE LEAVING. ACT NORMAL.” IN THE CAR HE LOCKED THE DOORS, GRIPPED THE STEERING WHEEL, AND SAID, “THAT ISN’T YOUR GRANDFATHER.”… SO I CALLED THE POLICE—AND FIVE MINUTES LATER TWO OFFICERS WALKED INTO THE BACKYARD, PULLED MY MOM ASIDE, THEN KNEELED IN FRONT OF THE MAN IN THE WHEELCHAIR LIKE THEY WERE TESTING HIM ON SOMETHING HE COULDN’T FAKE… AND WHEN ONE OF THEM CAME BACK TO ME, HIS VOICE WAS STEADY BUT HIS EYES WEREN’T: “MA’AM… WE NEED YOU TO ANSWER ONE QUESTION RIGHT NOW