04/22/2012 02:31 pm ET

Amber Tamblyn On 'House' Finale And More Casting News

As Fox's "House" series finale nears, its roster of returning cast member continues to grow.

TVLine reports that Amber Tamblyn will step into Martha Masters' shoes again for the series finale of "House" (Monday, May 21 at 9 p.m. ET on Fox).

The actress, who appeared in most of Season 7, told TVLine that when "House" creator David Shore e-mailed her to invite her back, her response was, “Duh.”

Former "House" series regular Olivia Wilde is also confirmed to reprise her role as Thirteen in “Everybody Dies,” the title of the final episode of "House." Wilde will also be in the penultimate episode. And Kal Penn may also be back for the finale as Dr. Kutner.

In more casting news ...

Former "Lost" actress Rebecca Mader will guest star on "White Collar." On the USA Network series, Mader will stir up trouble as Abigail. Her character is a con woman who blackmails Neal (Matt Bomer) into getting involved in her latest heist. And while Diana (Marsha Thomason) works undercover to bring Abigail to justice, the scam artist is trying to win her over romantically. [TVGuide]

Tatyana Ali has joined BET's upcoming comedy "Second Generation Wayans." The former "Fresh Prince Of Bel-Air" star will play Damien's personal assistant on the new show, which is based on the famous Wayans family. [TVLine]