Comic Title: Batman #218
Publisher: DC (National Periodical Publications, Inc.)
Address: 909 Third Avenue, New York, NY
Cover Date: Jan/Feb 1970
On Sale Date: November 11, 1969 Newsstand Date November 11, 1969
Source: House Ad, Phantom Stranger #5, Page 12

Newsstand Date November 11, 1969
Source: Comic Reader, #75

Copyright Date November 11, 1969
Source: Library of Congress, Periodicals 1969

Frequency: Monthly, with the exception of April and October
Cover Price: $0.25
Page Count: 64
Editor: E. Nelson Bridwell

See Also: The Guide to DC Giants

Notes:
This issue is labeled Giant #G-67.

Title: "Batman and Robin's Greatest Mystery"
Pages: 12

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

Writer: Edmond Hamilton
Penciller: Sheldon Moldoff
Inker: Stan Kaye

Reprinted From:
Detective Comics #234 (1956)

Feature Character(s)

• Batman (last appearance in Batman #101; next appearance in Batman #102)

Supporting Character(s)

• Robin (last appearance in Batman #101; next appearance in Batman #102)
• Commissioner Gordon (last appearance in Batman #101; next appearance in Batman #102)
• Alfred Pennyworth (last appearance in Batman #101; next appearance in Detective Comics #237)

Villain(s)

• Jay Caird and his gang (no further appearances)

Other Character(s)

• An unnamed man from the Gotham Research Foundation (no further appearances)

Flashback Appearance(s)

• Batman (last appearance in Detective Comics #231; next appearance in Batman #108)
• Commissioner Gordon (next appearance in Superman #76)

Synopsis:
Batman and Robin track down a crook, Jay Caird, who has stolen a sonic weapon. When the weapon is turned on the Dynamic Duo, they are knocked out and begin suffering from amnesia. Commissioner Gordon allows them to search the police files for clues to their secret identities in hopes that it will restore their lost memories.

Batman finds several clues while reading the files. He learns that he is wealthy, is a pilot, and a polo player. With the possibilities narrowed, Batman is able to guess that he is Bruce Wayne. He drives to Wayne Manor where his memories begin to return. With his recovery, he remembers where Caird was headed, and together with Robin, Batman captured the crook.