Nathan Fillion investigates Jessica Tuck in CASTLE Season 4

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Jessica Tuck is leaving her familiar hunting grounds on True Blood to visit Nathan Fillion in Season 4 of Castle. Tuck, who plays American Vampire League spokesperson Nan Flanagan, will be showing up on Castle’s turf as a wealthy art benefactor who becomes a suspect in a murder investigation, according to TVLine.

Nathan Fillion Scoops a Killing for CASTLE Season 4

The True Blood star got her start on the ABC soap opera, One Life to Live, as the sister of Nathan Fillion’s character, but this will be the first time the two actually get to share any scenes together because, due to the twisted plots that soaps usually have, Megan (Tuck) died before Fillion came onto the scene as Joey. It’s the family reunion that’s been years in the making. The episode with Tuck will also have another on-screen reunion for Castle star Fillion because The Killing’s Kristin Lehman, who appeared with Fillion in the short-lived 2007 Fox series, Drive, will be showing up as an art insurance investigator.

CASTLE gets Iceman for Fillion and Katic

In addition to continuing her role on HBO’s True Blood, Tuck will also be showing up on the big screen in the upcoming film, Model Minority.

Castle is back on the case when Season 4 of the ABC hit begins on September 19th.