Forest House Secret Door Escape

Imagine you are one of the most influential person of your country. Many attempts of murder was committed against you recently so you decided to build a secret room back your house to where you could hide your family in emergency situations. One night you were wathcing the tv when glanced a man wearing a mask and armed with a weapon running through your garden. You made your family woken up and guided them into this secret room. You closed its door and it became locked. You called the police, informing them about the danger. One hour later they called you back after terminated the threat. You wanted to go out from the room but found the door unopenable and the key couldn't fit into the lock. Find hidden objects and solve puzzles to make your way out.