Action Comics the title back onto a monthly schedule. Writer/artist George Pérez took over the title and was joined by scripter Roger Stern the following month. As writer of the series, Stern contributed to such storylines as "Panic in the Sky" and "The Death of Superman". He created the Eradicator in "Action Comics Annual" #2 and later incorporated the character into the "Reign of the Supermen" story arc beginning in "The Adventures of Superman" #500. The Eradicator then took over "Action Comics" as "the Last Son of Krypton" in issue #687 (June 1993). Stern wrote the 1991 story wherein Clark Kent finally
Action Comics 1 copy for US$1.5 million, making it the most expensive and most valuable comic book of all time. The copy sold is the third highest-graded copy from the CGC, which stands at 8.5 VF+ grade. As of 2011, there were six known Comic Guaranty LLC (CGC)-graded copies with a grade above VG (CGC 4.0), with only one issue having the grade of VF/NM (CGC 9.0) at that time. EC and "Mad" publisher William Gaines, whose father was also a comic book publisher and had business dealings with DC Comics at the time "Action Comics" #1 was published, claimed in a "Comics