Comic Title: Detective Comics #416
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: October 1971
On Sale Date: August 31, 1971 Newsstand Date August 31, 1971
Source: House Ad, Detective Comics #415, Page 46

Copyright Date August 31, 1971
Source: Library of Congress, Periodicals 1971

Frequency: Monthly
Cover Price: $0.25
Page Count: 48
Editor: Julius Schwartz

Title: "Man-Bat Madness"
Pages: 17

Feature(s):
Batman (of Earth-1)

Writer/Artist: Frank Robbins

Reprinted In:
Showcase Presents:Batman Vol. 6 TPB (2016)

Feature Character(s)

• Batman (last appearance in Brave & the Bold #98; next appearance in Batman #236)

Guest Star(s)

• Man-Bat (last appearance in Detective Comics #416; next appearance in Detective Comics #429)

Guest Appearance(s)

• Francine Langstrom (last appearance in Detective Comics #416; next appearance in Detective Comics #429)

Other Character(s)

• Marla Manning (last appearance in Batman #220; no further appearances)
• Howie and another scientist (no further appearances)
• Several opera patrons (no further appearances)
• Various subway train passengers (no further appearances)

Flashback Appearance(s)

• Batman (following Kirk Langstrom's wedding; last appearance in Detective Comics #407; next appearance in Batman #229)
• Kirk Langstrom (following Kirk Langstrom's wedding; last appearance in Detective Comics #407; next appearance in Detective Comics #416)
• Francine Langstrom (following Kirk Langstrom's wedding; last appearance in Detective Comics #407; next appearance in Detective Comics #416)

Synopsis:
Following the wedding of Kirk and Francine Langstrom, Batman provided them each with a supply of anti-serum in case either should be transformed again into bat creatures. Kirk vows to give up his experiments, but several months later he begins anew.

While attending an opera with his wife, Kirk begins transforming once again into Man-Bat. Francine tries to administer the anti-serum, but the vial shatters before she can use it. Batman begins a pursuit of the now fully transformed Langstrom. The chase results in a train crash where they are both forced to help the victims.

Langstrom then returns to his lab where Francine has discovered his new experiments. When Man-Bat tries to give himself another dose of the formula, Batman swaps it with a new improved anti-serum. Man-Bat reverts to Langstrom again. Batman hopes the new solution is permanent. Francine hopes that it will allow the couple to have children safely.