Batman Detective Comics s/c vol 3 The Courage That Kills back

Criminals are a superstitious lot, something the Dark Knight has long used to strike fear into their hearts in his fight to uphold justice. But what if Gotham was a city without fear? Would its citizens find freedom without inhibitions, or be driven suicidal by an inability to process mortal terror? That's exactly what Gotham's newest villain wants to find out. A mysterious, weaponized virus is discovered with a death toll already in the dozens. With the threat of a city-wide attack looming, the investigation crashes to a halt when the Dark Knight himself becomes infected. Now, in a race against time, Batman must rely on the help of Mr. Terrific, Superman, and more to find the answers he seeks before the virus takes control of his body and mind...forever. Collects DETECTIVE COMICS #1101-1106.