Secret Six #1

"Code Name: Mockingbird!" kicks off with a tight, suspenseful team-up in Secret Six #1 (1968), as six operatives—each hiding a dangerous secret—are forced into a dangerous alliance by the enigmatic Mockingbird. Written by E. Nelson Bridwell and brought to life with sharp, dynamic art by Frank Springer (pencils and inks), the story unfolds with a high-stakes mission: stop a second demonstration of a weapon developed by the elusive Zoltan Lupus. The cover by Frank Springer captures the tension perfectly, setting the tone for a mystery where trust is the first casualty.