Millennium Edition: Detective Comics 225 #[nn]

In "The Strange Experiment of Dr. Erdel," a brilliant but reclusive scientist's accidental teleportation of a Martian to Earth sets off a chain of events that reshapes both their destinies. When the scientist dies, the Martian—now stranded on a world he doesn’t understand—chooses to embrace his new reality by joining the force as a detective, guided by a sense of duty and the memory of the man who brought him here.