The cast of ABC's "Boston Legal" will expand by at least two when it returns for its second season, it was reported Thursday.

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Ryan Michelle Bathe and Justin Mentell have signed on to play junior associates in the fictional law firm at the center of the David E. Kelley series, The Hollywood Reporter said.

Mentell, of Waukegan, Ill., is a Hollywood newcomer, while Bathe has been seen on NBC's "ER" and UPN's "Girlfriends" and "Half & Half."

"Boston Legal" is expected to have its season two premiere at the end of September, the Reporter said.