even walls have eyes and ears 

(тайное всегда становится ясным in Russian)

an expression meaning

even the best kept of secrets will become known sooner or later

son: dad, how did you know I had bad grades?

father: roflmao son, even walls have eyes and ears. You tried burning your report card, but forgot to take the ashes out of the fireplace; put 2 and 2 together, and you get 4, right?

even walls have eyes and ears by Uncle Dimma November 16, 2014

even walls have eyes and ears 

(Тайное становитса Ясным in Russian)

an expression meaning

even the best kept of secrets will become known sooner or later

son: dad, how did you know i had bad grades?

father: (roflmao) son, even walls have eyes and ears. You tried burning your report card, but forgot to take the ashes out of the fireplace; put 2 and 2 together, and you get 4, right?. You therefore Have The Right to Remain Silent.

even walls have eyes and ears by Uncle Dimma April 6, 2013