Issue: #163
Last valuation update: 2025-10-01
When Sif goes missing during a mission on Earth, Thor investigates. What the Thunder God uncovers disturbs him greatly; an atomic research site has been infiltrated by mutated beings. Is Lady Sif’s disappearance connected to this strange event? Enter Pluto, the Roman god of Death!
Creators: Stan Lee, Jack Kirby, Sam Rosen, Vince Colletta