Splinter stands there, pinching the bridge of his nose.

"Again."

"She asked to go, and said she wanted it to be a surprise, so I thought..."

"You thought dabbling in the arcane arts of which you know precious little would be a valuable use of your time, and a safe method of travel for Sallie."

"Well...when you put it like that it sounds like a stupid idea."

Splinter looks to his son, eyes narrowed. It's a look that could cut through solid vibranium if he wished it so.

"Give me the chalk."

Mike, not having a death wish, complies. Chalk in hand, Splinter looks over the writing on the wall, making small corrections here and there where needed. The glow around the door's perimeter shifts to a slightly different hue, and then intensifies.

He slips the chalk into his pocket and without turning to look back at Mike says, "Return the appliance to the kitchen. We shall speak of this when I return, and then never again."

Splinter pushes the door opens and disappears into the howling din of the city beyond.