By Michael Ausiello
February 19, 2009 at 12:00 PM EST
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Sean McNamara’s family tree is having a little work done.

Nip/Tuck has tapped Lost alum Neil Hopkins (he played Charlie’s heroin-addicted sibling, Liam) to join the cast as Sean’s long-lost brother, Brendan, sources confirm to me exclusively.

An FX rep wouldn’t confirm the hire, but a Nip/Tuck insider describes the character — who’ll be introduced at the tail end of the show’s upcoming sixth season — as a recovering meth addict (pigeonholed much, Neil?) who has been living on a nature preserve. “Sean thought his brother had died,” explains the source. “So he’s definitely surprised to see him.”

Nip/Tuck‘s fifth season concludes on March 3. FX has yet to announce a launch date for season 6, but Wikipedia puts it at early 2010, followed by the series-concluding seventh season in 2011. Take that with a grain of salt, though.

What do you think about Sean getting a brother? Intriguing development, or the latest in a long line of shark-jumping moments for the show? Sound off below!

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