| Issue | #21 |
| Published | December 1985 |
| Cover Price | 1.50 |
| Pages | 36 |
| Editing | Roy Thomas |
| Notes | Labeled: "Special Crisis Cross-Over" |
| Characters | Hourman & Dr. Midnight |
| Genre | superhero |
| Pencils | Todd McFarlane |
| Inks | Tony DeZuniga |
| Notes | Labeled: "Special Crisis Cross-Over" |
| Characters | Hourman [Rick Tyler] (intro); Dr. Midnight (intro) |
| Genre | superhero |
| Script | Roy Thomas (Dann Thomas co-plot) |
| Pencils | Todd McFarlane |
| Inks | Steve Montano and Tony DeZuniga |
| Colors | Anthony Tollin & Adrienne Roy |
| Letters | David Cody Weiss & Gusto |
| Notes | Intro the new Hourman and Dr Midnight (note the spelling.) Brainwave returns to the group, with enhanced powers. JSA and Infinity recruited by Harbinger for Crisis. |