senses door

I managed to snag her arm and check her advance just as a heavy door slammed to cover the archway with tooth-rattling force. If I hadn't delayed her, it would have hit her like a speeding truck. She recovered her balance, and while she did we heard a heavy bolt slide shut on the door. Charity shoved a hand at the door, which remained fixed. She kicked a booted foot at it, and failed to so much as rattle it in its frame.
Molly screamed again, still close, though muffled by the closed door. Her cry was weaker, shorter.
"Molly!" Charity screamed.
I thrust the spread fingers of my left hand against the door, and was instantly aware of the energy flowing through it, binding it, giving it strength beyond reason to resist being opened. I looked for a weakness, a soft spot in the adamant magic supporting the door, but there was none. The ward on the door was, simply put, flawless. It spread through the door's substance as coldly and beautifully as crystals of ice forming on a window, the magic of Winter drawn up from the heart of the land. There was no way for me to unravel the subtle, complex faerie magic.
But then, it was faerie magic. I didn't have to be subtle to counter it.
"Charity," I snapped. "It's faerie make! The hammer!"


Proven Guilty Chapter 38, Page 306