Kirby writes and draws the 17-page story in this issue, “Mad, Mad Dimension”, the middle of the “Night People” storyline. Cap’s search for the missing Falcon and Leila leads him to the boisterous Texas Jack Muldoon, who saw the Falcon disappear last issue. Muldoon’s been doing his own investigations, leading them to the missing “Zero Street” and the tale of a scientist who had a breakdown but continued his research into interdimensional travel from the asylum.
Meanwhile, in another dimension…
Sam Wison has been brainwashed by the “Night People”, and at their bidding is battling a giant monster trying to attack the asylum, which is now located on top of an asteroid. He manages to knock the creature into space, but the Night People plan to open the gateway to Earth and send all the other monsters in the dimension to Earth. They open up the gateway and Cap leaps through, followed by Texas Jack.
Kirby’s long final run on Cap is pretty fun. The Falcon’s fight with the monster in this issue is a nice bit of action, but the Cap side of the story is mostly getting characters in place for the big conclusion, and the phone call he has with Sharon Carter is kind of strange.
Kirby also draws the cover, and both the cover and story are inked by Frank Giacoia.
This whole story, and much more, is available in Captain America: Bicentennial Battles.