“I reached for the switch on my desk lamp and flashed HELLO.
The lights switched off in Cassidy's bedroom, and her flashlight flicked on.
SORRY.
"She's sorry," I told Cooper, because he didn't understand Morse code.
He lifted his head as if to say But you already knew that, old sport.
Her flashlight flickered again.
FORGIVE ME.
This time, I didn't hesitate.
ALWAYS, I replied.”