1
Laurel, of course, was a girl with a serious secret.
2
Her latest novel, Soon, is based on a character who has a " serious secret".
3
Oh, I hope so; any serious secret.
4
The amount of serious secret crime which occurs in India, and never comes to light, is very considerable.
5
"You carry one very serious secret in your heart," he told her gravely, "one little pain which must sometimes stab you.