dark secret.
There is a secret which is kept un-revealed by the people who run finance companies, and so on, a very dark secret.guarded secret.
As the ending was a closely guarded secret, many details had to be imagined by the playwright.secret marriage.
Cynthia tells her mother, and several friends, about the secret marriage between the film star and the famous war correspondent.secret of success.
This time, more than ever, the secret of success will be in correctly implementing the budget.shared secret.
In contrast to symmetric cryptosystems, public key cryptography is a form of cryptography which generally allows users to communicate securely without having prior access to a shared secret key.terrible secret.
Eventually the player discovers a terrible secret: the shadowy figure responsible for all this chaos is a dark twin.