: The debut of the Clown Prince of Crime, who announces his murders over the radio before committing them.
: It marks the first solo title for the Dark Knight and the debuts of his greatest nemesis, The Joker , and his most famous love interest/rival, Catwoman (initially called "The Cat").
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You can find digital versions or modern reprints through official channels like the DC Universe Infinite subscription service or by purchasing the trade paperback from retailers like Amazon or Mile High Comics .
: Batman faces the recurring mad scientist Hugo Strange and his "Monster Men."
