MARVEL'S GREATEST COMICS #43 offers an almost complete reprint of the story from FF #56 in 1966, including the cover. Joe Sinnott inks, of course. In the main story, Klaw, from the recent Black Panther storyline, returns to attack the FF with new powers and a new costume, hoping to lure in the Panther. He seals off Reed and Ben in the lab while attacking Sue. There's some great Reed/Ben interplay in their scenes this issue, like Ben asking "How come ya never cook up any gizmos that work better on guys who can stretch?".
The FF prevail in the end, thanks to a remote assist from T'Challa with a delivery of vibranium.
As all this occurs, the Inhumans remain imprisoned, with Black Bolt becoming injured trying to escape, while Johnny and Wyatt Wingfoot continue their search for the Inhumans with Lockjaw, the teleporting dog. God, I love all these characters introduced in just the previous year of the book.
Unfortunately, this issue removes the last tier of panels from the final page, which set-up the Surfer/Doom storyline, since they were skipping it in this book, having reprinted it in MARVEL TRIPLE ACTION the previous year (which, looking at the dates now, is odd. They were reprinting the second major Surfer story in one book while reprinting the first one in another).