Daredevil #91

In "Fear Is the Key!", Daredevil uncovers a chilling conspiracy as he races to stop Mr. Fear, a masked adversary with a personal vendetta, while Black Widow's investigation into her own panic attacks leads her down a dangerous path. Written by Gerry Conway and brought to life with moody precision by Gene Colan, with inks by Tom Palmer and colors by the same, this 1972 classic features a standout cover by Gil Kane and Joe Sinnott.