Greg Pak!  Diego Galindo!

With fourteen inches of snow on the horizon and the boys already frozen to the bone, tensions run high! Will, desperate to unravel the secrets left behind by a young Bob Newby, presses on after finding the entrance to a mysterious abandoned mineshaft. Meanwhile, Mr. Clark searches for the boys, but can he find them before something terrible happens?

"The definitive companion piece to the nostalgia-filled Netflix hit!" -Infinite Earths