Comic Title: Action Comics #288
Publisher: DC (National Periodical Publications, Inc.)
Address: 575 Lexington Avenue, New York, NY
Cover Date: May 1962
On Sale Date: March 29, 1962 Newsstand Date March 29, 1962
Source: House Ad, Superman #153, Page 31

Copyright Date March 29, 1962
Source: Library of Congress, Periodicals 1962

Frequency: Monthly
Cover Price: $0.12
Page Count: 32
Editor: Mort Weisinger

Title: "The Man Who Exposed Superman"
Pages: 13

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

Penciller: Curt Swan
Inker: George Klein

Reprinted In:
Showcase Presents Superman Vol. 3 TPB (2007)

Feature Character(s)

• Superman (last appearance in Superman's Girl Friend, Lois Lane #33; next appearance in Wonder Woman #130)

Supporting Character(s)

• Lana Lang (last appearance in Superman's Girl Friend, Lois Lane #33; next appearance in Superman's Girl Friend, Lois Lane #35)
• Jimmy Olsen (last appearance in Superman's Girl Friend, Lois Lane #33; next appearance in Superman's Pal, Jimmy Olsen #61)
• Lois Lane (last appearance in Superman's Girl Friend, Lois Lane #33; next appearance in Superman's Pal, Jimmy Olsen #61)
• Perry White (last appearance in Superman's Girl Friend, Lois Lane #33; next appearance in Superman's Pal, Jimmy Olsen #61)
• Krypto (last appearance in Superman #152; next appearance in Superman #154)

Villain(s)

• Hal Colby (an embittered convict; no further appearances)
• Several underworld leaders (no further appearances)

Guest Appearance(s)

• Superboy (last appearance in Adventure Comics #295; next appearance in Adventure Comics #296)

Other Character(s)

• Clark Kent’s Smallville High classmates (no further appearances)

Flashback Appearance(s)

• Lana Lang (last appearance in Superboy #96; next appearance in Adventure Comics #297)

Cameo Appearance(s)

• Jonathan Kent (in flashback)
• Martha Kent (in flashback)

Synopsis:
Hal Colby is released from prison where Superboy put him years ago. He sets out to prove Superman’s secret identity. To do so, Colby becomes a TV producer and begins a special on Superman. When questioning several of Superman’s friends he believes Clark Kent could be Superman. Colby then visits the old Kent house in Smallville and discovers the secret tunnel.

Colby is now ready to reveal his knowledge on live television. Clark knows what Colby is up to, so when the crook threatens to blow up Clark with dynamite if he doesn’t reveal his powers, Clark does not react. The dynamite is fake, and Colby is disgraced. Superman also has Krypto dig several tunnels to explain the existance of tunnels under the Kent house.