It's can be difficult for a sleeper agent with a taste for bling to find jewelry that says both "Stylish!" and "Hail Hydra!" without drawing too much unwanted attention. Luckily, What's Your Passion Jewelry is here to help.

The company offers a line of licensed Marvel jewelry, including the Marvel's Agents of S.H.I.E.D. Hydra Ring ($225). To the casual observer, it's the silver-and-gold ring given to all new agents of the organization. However, when you're in more trusted company, you can remove the jewelry to reveal the emblem of Hydra.

If you're fully committed of S.H.I.E.L.D.'s mission, or not brave enough to risk detection, there's also a standard version, without the surprise.

What's Your Passion also sells Captain America, Deadpool and Ms. Marvel pendants. Each item comes with a display box and certificate of authenticity.