Jane Seymour Cast on Franklin & Bash As...

A trio of veteran actors have signed on for one Franklin & Bash episode.

First, Jane Seymour will come on board as Colleen Bash, the mother of Mark Paul Gosselaar’s Peter. TNT casting notes describe the character as "freewheeling and indecisive."

Second, Beau Bridges will reprise his role as Leonard Franklin, the estranged dad of Breckin Meyer’s Jared, who will take his son on in court during the installment titled "For Those About to Rock."

Third, Peter Weller will guest star as Bert Mazzani, a reclusive rock star with child problems of his own.

This episode will air at some point early in season two, which premieres next summer on TNT.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.