公然の秘密
公然の秘密.
to disclose a secret to one―reveal a secret to one―divulge a secret to one―confide a secret to one―unbosom oneself of a secret to one―unburden one's heart of a secret to one―let one into the secret
秘密のさまの
backstairs intimacies
秘密にすること
A secret transpires.