Le Tombeau de Dracula #1

In "Le Secret du Bohémien," a ruthless baron demands that a gypsy reveal the secret of turning lead into gold—unaware the gypsy is actually an alien scouting Earth for a specimen to display in a zoo on his homeworld. When the baron's obsession leads to violence, La Guepe and Henry Pym find themselves caught in a web of deception, where the true danger lies not in alchemy, but in the alien's cold calculation.