prikrivati

1. to conceal; to cover up; to hide
   Policija sumnja da on prikriva dokaze. — The police suspect he is concealing evidence.
   Zašto prikrivaš od mene šta se desilo? — Why are you hiding from me what happened?
2. (of feelings) to hide; to mask
   Teško je prikrivala razočaranje. — She could barely hide her disappointment.

The person kept in the dark takes od + gen.: prikrivati nešto od nekoga.