In Character: "Now that's a relief.... " Zork agrees to push but asks, "You are thinking for me to push from within or to go out there with you?"
Out of Character: What kind of roll do I need for pushing, against strength?
"From within," she replies, "But you're welcome to try climbing."
She tries to return the helmet to Durgan, but he says, "Its more useful on you."
She then ponders, "I wonder if the illusion was an existing magical effect or if someone cast it… "
Between Zork and Durgan pushing on the trap door the start to feel it move. Redoubling their efforts they are finally able to push the chest off the door and gain access to the roof. The roof is sloped from the center to the outer edges. The slope is not very steep so standing is not a issue. (Slope of roof is 1 foot per every 12 feet.) The roof is empty besides a large chest. How it got to be partially over the trap door is something to ponder.
Out of Character: Zork examines the chest from a distance, what does it look like?
In Character: Turning to his friends, "I think some detect magic will be best around now."
He commands his dog to look around.
Sessativa obliges, casting her prepared Detect Magic on the chest. If it doesn't have an aura, she will open it, suspecting nothing else to disturb them.
Out of Character: There's also one corridor we haven't explored.
Zork comments, "This is all very weird but the platinum should come in handy."
He waits for Sessativa to examine the books.