Larry Hagman, Josh Henderson

Josh Henderson has been cast in TNT's Dallas update, the network announced Tuesday.

The new Dallas will focus on the Ewing offspring and their power struggles with one another over the family dynasty. Henderson, who has appeared on Desperate Housewives, 90210 and CSI, will play John Ross, the son of the original J.R. Ewing played by Larry Hagman.

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As previously reported, Hagman will reprise his role as the Ewing patriarch. Jordana Brewster has also been cast as Elena, who is involved in a love triangle with John Ross and Christopher, the adopted son of Bobby and Pam Ewing.

Patrick Duffy and Linda Gray, who played Bobby and Sue Ellen in the original, will also return for TNT's update.