Detective Comics, Vol. 1

The Secret of the Waiting Graves - In Central Mexico, Batman faces off against a wealthy married couple who may be criminally insane, may have survived for over 150 years with the help of strange flowers, and who wish to spread the flowers and insanity throughout the world. Drop Out... or Drop Dead! - A captive Robin strives to break out of the grasp of the Communist spies backing Jonah Ramm and his radicals and to prevent a strike from happening at the Hudson campus.