may not be a household name... yet. But the British actor, who recently starred as Harry Dresden on the now-defunct Sci Fi Channel fantasy series
The Dresden Files
, has guest-starred on
. He's also racked up recurring roles on
Next up? The chameleon actor will play a Wall Street CEO and costar with
on the new ABC drama
. "He's what's described as a corporate raider," Blackthorne tells TVGuide.com. "He's somebody that buys up companies, sells companies, just an all-around outrageous moneymaker."
Blackthorne's story arc kicks off on Oct. 4 for nine episodes. "He's someone that these other guys are slightly wary of in a business sense," reveals the actor. "It also seems our man is circling around Dylan's ex-wife, the one he still has the hots for."
Just don't pin your hopes on Blackthorne sticking around for long. "I think when you're handed these kinds of opportunities, you've just got to make the most of them," he says. "I've enjoyed the American characters and the English characters and the goodies and the baddies. It's nice to mix and match parts. It keeps me on my toes!"
- Reporting by Dana Meltzer Zepeda