"...My brother." Stan just manages to say.

Dipper and Mabel are standing next to each other, mouths agape, half in fear, half in shock. A tall figure in a black hoodie, black turtleneck and black pants comes out of the portal, his face is covered with a scarf and hood.

Coming out of the blue glow of the portal, he stops to pick up an old book from the floor, checking the number of fingers on the cover of the book with his own.

Silence overtook them.