cloak and dagger
hugger-mugger
adj
-
Secret, clandestine, sly.
-
Disorderly, chaotic, confused.
noun
verb
adv
-
Secretly.
-
Confusedly, in a muddle.
How often have the words cloak and dagger and hugger-mugger occurred in a corpus of books? (source: Google Ngram Viewer )