Action Comics revealed his identity as Superman to Lois Lane. Several major Superman storylines crossed over with "Action Comics" including "Emperor Joker" in 2000 and "Our Worlds at War" in 2001. John Byrne returned to "Action Comics" for issues #827–835 working with writer Gail Simone in 2005–2006. After the "One Year Later" company-wide storyline, "Action Comics" had a crossover arc with the "Superman" series, entitled "" which told of Clark Kent attempting to protect Metropolis without his powers until eventually regaining them. The "Last Son" storyline was written by Geoff Johns and Richard Donner, the director of the 1978 film "Superman: The
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