from previous....

....he happened to spot a  window that was open, the room inside was absolutely  dark,  he  speculated  either it was a room not  in use or it was a store  room, he began his survey of the surface and  surroundings, the rusted  railings were old and cracked and their alignment was not  perfect,   , the size of the window was so large he could easily  get across  through  it