Comic Title: Detective Comics #151
Publisher: DC (National Comics Publications, Inc.)
Address: 480 Lexington Avenue, New York, NY
Cover Date: September 1949
On Sale Date: July 20, 1949 Newsstand Date July 20, 1949
Source: House Ad, Boy Commandos #35, Page 28

Copyright Date July 18, 1949
Source: Library of Congress, Periodicals 1949
Until 1958 DC did not report actual on sale dates to the copyright office
The publication dates listed in LoC records are NOT release dates.

Frequency: Monthly
Cover Price: $0.10
Page Count: 48
Editor: Jack Schiff

Title: "I.O.U. My Life"
Pages: 12

Feature(s):
Batman (of Earth-2)

Artist: Dick Sprang

Reprinted In:
Batman Archives Vol. 7 HC (2008)
Batman:The Golden Age Omnibus Vol. 6 HC (2019)

Feature Character(s)

• Batman (last appearance in Star Spangled Comics #96; next appearance in World's Finest Comics #42)

Supporting Character(s)

• Robin (last appearance in Star Spangled Comics #96; next appearance in World's Finest Comics #42)

Villain(s)

• Homer Davis (a banker; no further appearances)
• The Lazy Larry Gang (no further appearances)

Other Character(s)

• Ben Kole (no further appearances)
• Peter Chaney (an architect; no further appearances)
• Jenkins (a butler; dies in this story; no further appearances)

Synopsis:
Ben Kole saves the lives of Homer Davis, Peter Chaney, and Batman. In return he gets each of them to sign a paper stating that they owe him their lives. When Kole is financially ruined, he tries to get the men to pay him. When they refuse to pay the blackmail demand, Kole curses them and tells them they will die in the same manner that he saved them.

When Davis drowns in his home, Batman investigates the apparent accident. He then rescues Chaney from gorilla attack. Batman sets himself up as the next intended target, but escapes his own death. He follows a clue to Kole's office where he finds Davis about to kill him. Davis faked his own death and attempted to frame Kole. His real goal was to kill Chaney to whom he owed a large sum of money. Batman foils the plot, and Kole apologizes for trying to cash in on his I.O.U.s.