Comic Title: Detective Comics #401
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: July 1970
On Sale Date: May 28, 1970 Copyright Date May 28, 1970
Source: Library of Congress, Periodicals 1970


Frequency: Monthly
Cover Price: $0.15
Page Count: 32
Editor: Julius Schwartz

Title: "Midnight Is the Dying Hour"
Pages: 8

Feature(s):
Robin (of Earth-1)
Batgirl (of Earth-1)

Writer: Dennis J. O'Neil
Penciller: Gil Kane
Inker: Vince Colletta

Reprinted In:
Best of DC #30 (1982)
Showcase Presents:Batgirl Vol. 1 TPB (2007)
Showcase Presents:Robin the Boy Wonder Vol. 1 TPB (2008)
Batgirl:The Bronze Age Omnibus Vol. 1 HC (2018)
Robin:The Bronze Age Omnibus HC (2020)

Feature Character(s)

• Robin (last appearance in Detective Comics #400; next appearance in Teen Titans #28)
• Batgirl (last appearance in Detective Comics #400; next appearance in Detective Comics #404)

Villain(s)

• Jack Markham (last appearance in Detective Comics #400; no further appearances)

Other Character(s)

• Amos Willard (as a corpse; last appearance in Detective Comics #400; no further appearances)

Cameo Appearance(s)

• Hank Osher (in flashback)
• Huntington (in flashback)

Comments:
This story is continued from Detective Comics #400.

Synopsis:
Robin investigates the murder of Amos Willard on the campus of Hudson University. His investigation leads him to the library where the killer has caught Batgirl and is preparing to seal her inside the wall of the building. Robin rescues her. Working together, the two heroes chase the killer and expose him as acting student Jack Markham.