let the cat out of the bag

Peak says Banksy's anonymity "let's him keep doing the campaigning stuff he does unfettered" which, along with loyalty, probably stops the few in the know from letting the cat out of the bag.

Now that the movie is in theaters — spoiler alert — we can finally let the cat out of the bag.

The 2010 census let the cat out of the bag that Seattle has more pets than children.

One recent post of a cat inside a traveler’s clear plastic backpack featured the caption, “We let the cat out of the bag … on our Top 10 Catches of 2021!”

Ultimately, McCartney was the first to “let the cat out of the bag” by going solo — “because I was fed up of hiding it” — and therefore incurred the majority of the blame.