Before comic books, fans had to follow their favorite superheroes around to watch their exploits. Retire your grappling hooks and observe unobtrusively with today's Groupon: for $10, you get $20 worth of comics and collectibles at Comics Conspiracy in Sunnyvale.

Marvel and DC Comics coexist in peace on the shelves of Comics Conspiracy, accompanied by graphic novels, comics-related merchandise, and collectible card games. The shop's resident collectors have acquired rip-roaring page-turners such as Giant-Size X-Men #1 ($4.99), Fear Itself #1 ($3.99), and Walking Dead #1 ($9.99), which inspired AMC's hit show of the same name. On new release day (Wednesday), customers chat with the staff and wander the aisles in search of hot comics such as Flashpoint #1 ($3.99) and the one they wrote and secretly slipped onto the shelf. Comic and movie buffs make peace over film-inspiring gems such as Green Lantern: Secret Origin ($14.99), as well as a range of Thor comics and Captain America gear. Non-comic collectibles abound in the store, including Magic: The Gathering New Phyrexia booster packs ($3.99), which allow warlocks to train discreetly for real-life wizards' duels.