Whedon's Agents of S.H.I.E.L.D. casts mysterious new character

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Jul 31, 2013, 3:42 PM EDT

The cast of Joss Whedon’s highly anticipated ABC series Agents of S.H.I.E.L.D. is getting a little bigger. So who is the latest mystery man?

David Conrad (Ghost Whisperer) has signed on for the small-screen Avengers spinoff, according to TV Line, though his exact role has not been revealed.

But the series has been looking to cast a “brilliant and quirky scientist” to recur on the series, and Conrad seems to fit all the tangibles for the role. Conrad brings some decent genre experience, so he should fit in nicely with the baddie-fighting group of secret agents.

As for confirmation on who exactly he is playing? We may have to wait until the show debuts on Sept. 24 to find out.

While tossing in some nice big-screen crossovers via Agent Maria Hill (Cobie Smulders), Whedon seems to be doing a good job of building a viable extension of the universe for television. We can’t wait to see how Conrad fits into the mix.

(Via TV Line)