"Who knows how many have died to keep this terrible secret?"

Would he not one day make you pay for keeping this terrible secret?

A stranger comes to a small town with a terrible secret.

That was the greatest and most terrible secret of all.

Far better never to have known this terrible Ancient secret!

One brother and I shared a terrible secret that only a few people knew about.

London is a terrible secret I try to keep from the river.

It was a great and terrible secret, which no one may know without dying.

But somewhere deep inside himself he carried a terrible secret.

She seems to have a terrible secret in her past.