My 76-year-old mother begged me not to leave her alone with my 28-year-old son. Every night, he locked the door of his room, and every morning she seemed more terrified. But when I installed a hidden camera and saw what I was carrying to his room at 3 a.m., I IMMEDIATELY CALLED THE POLICE…

The doctor had recommended further testing because his symptoms could indicate a cognitive disorder.

“Why didn’t you tell me?” I asked.

“Because Grandma begged me not to.

He pulled the notebook out of the black bag.

Each page contained dates, hours and descriptions of the terrifying episodes my mother had experienced.

October 3, 2:16 a.m. — Grandma believed Grandfather was still alive.

October 5, 3:08 a.m. — Grandma did not remember her own address.

October 7, 1:42 a.m. — Grandma was scared to see her reflection in the mirror of the hallway.

Then I saw an annotation from the night before.

October 9, 3:17 a.m. — Grandma did not recognize me. He said I was a stranger.

My hands started shaking.

Daniel explained that he had been using family photographs and recommended gentle memory exercises during medical consultations.