Dennis died as a result of the ill treatment he received from the Goughs.
It would appear – that along with the British public – the case gave Christie a rare opportunity to be inspired by the headlines of the day.
The white cliffs of Dover
Just you wait and see
Therell be love and laughter
And peace ever after
When the world is free
The shepherd will tend his sheep
The valley will bloom again
And Jimmy will go to sleep
In his own little room again
The British dilemma was that they were what the Yanks call the good guys but still 12-year-old Dennis was dead, while being cared for by responsible adults, who were supposed to protect him.
Why wasn't Dennis - like Jimmy - snuggling down to sleep in his own little room again?
For more info on the Dennis O'Neill story see