The Zodiac Crimes Robin deduce that he is plotting to commit twelve crimes based loosely on astrological signs of the zodiac and that he committed the first Zodiac Crime already by stealing the rare art map, whose initials stand for the sign of the Ram (Aries). Meanwhile, back at his hideout Joker clues the recently arrived (rather, packaged and shipped) Penguin into his astrological plan. He then gives a false clue to Batman and Robin to the effect that "Taurus the Bull is next on my show", and "You'll be singing a song of woe!" Batman and Robin deduce that Joker was telling
Zodiac Killer yourselves when I have my BLAST," followed by the Zodiac's cross circle signature. On the back of the card, the Zodiac threatened to use the bus bomb soon unless the newspaper published the full details he wrote. He also wanted to start seeing people wearing "some nice Zodiac butons ." In a letter postmarked June 26, 1970, the Zodiac stated he was upset that he did not see people wearing Zodiac buttons. He wrote, "I shot a man sitting in a parked car with a .38." The Zodiac was possibly referring to the murder of Sgt. Richard Radetich, a week