ichabod leaps up and struggles with the heavy trap door.  slams it. he closes the latch just as the horseman hits. the door buckles.
pounding continues. the grindstone shifts. katrina and young masbath back away. ichabod holds his lantern up, desperate for ideas, searching.
katrina looks down from the stairs.
ichabod sees below.  the horseman sticks a hand through, trying to push the grindstone aside, then withdrawing. the racking axe continues. won't be long.
ichabod slices into a sack hanging from a pulley system. more and more dust rises.
the horseman runs, agile, up stairs.
the horseman continues up. the lantern falls past.
the lantern hits the ground and shatters. flames explode!