"Sky Jacks, Part 3 of 4."
*The nature of the "sky world" has been revealed! But the mystery of how it came into being still eludes the Doctor. But with Clara and the crew of a retrofitted B-29 bomber from World War II in tow, the Doctor sets out for the center of this strange dimension with seemingly infinite skies! Join us for "Sky Jacks," Part 3 of 4!
*Source: idwpublishing.com