- Script
- Roy Thomas
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Colors
- ?
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- X-Men [Angel [Warren Worthington III]; Beast [Henry McCoy]; Cyclops [Scott Summers]; Iceman [Robert Drake]; Marvel Girl [Jean Grey]; Professor X [Charles Xavier]]; Zelda "Zel" Kurtzberg; Vera Cantor; Colosso (destroyed); Sara Grey Bailey (mentioned); Maggia [Count Nefaria [Luchino Nefaria]; Eel [Leopold Stryke]; Plantman [Samuel Smithers]; Porcupine [Alexander Gentry]; Scarecrow [Ebenezar Laughton]; Scarecrow's crows; Unicorn [Milos Masaryk]]
- Synopsis
- The X-Men defeat Colosso in a Danger Room training simulation. Scott is jealous of Warren's relationship with Jean and Professor X frets over his inability to walk. Count Nefaria, seeking to force the X-Men to serve him, has his agents capture them.
- Reprints
- Keywords
- Central Park; Danger Room; Grand Central Station; Washington Capitol; X-Mansion
Edited reprint. Page 20 cut.
- Script
- Roy Thomas
- Pencils
- Werner Roth
- Inks
- Dick Ayers
- Colors
- ?
- Letters
- Artie Simek
- Genre
- superhero
- Characters
- X-Men [Angel [Warren Worthington III]; Beast [Henry McCoy]; Cyclops [Scott Summers]; Iceman [Robert Drake]; Marvel Girl [Jean Grey]; Professor X [Charles Xavier]]; Senator; Major General Fredericks; Colonel Hendershoot; captain; corporal; Charlie; Bill; guard; Congressman; Eddie; Maggia [Count Nefaria [Luchino Nefaria]; Eel [Leopold Stryke]; Porcupine [Alexander Gentry]; Scarecrow [Ebenezar Laughton]; Scarecrow's crows; Unicorn [Milos Masaryk]]
- Synopsis
- Count Nefaria places a Crystalline Dome over Washington and forces the X-Men to help him take it over. Professor X temporarily walks via "lightweight flexible metal braces" and helps defeat Nefaria.
- Reprints
- Keywords
- US Army; US Congress; US Senate; Washington Capitol; Washington Monument; Washington Police Department; X-Mansion
Edited reprint. A total of 2 pages are cut. Panels 4-6 of page 11 are cut. Panel 1 of page 12 expanded in width, with new art added to left and right margins of panel. Panels 2-6 of page 12 are cut. Panels 2-5 of page 13 are cut. Page 11 of the reprinted version has panels 1-3 of page 11, panel 1 of page 12 (expanded), and panels 1 and 6 of page 13.