After Zoe Barnes's (Kate Mara) shocking death in season 2 of House of Cards, fans are wondering who Frank Underwood (Kevin Spacey) might target next, and who will pose as a grave threat to him. Recently, it was revealed that Lucas Goodwin (Sebastian Arcelus) might return.

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If Lucas gets out of jail and back to work, he will definitely go after Frank and seek vengeance for Zoe's death. This might actually thicken the plot as Frank's presidency would be threatened by the revelation.

In an interview with Katie Couric, Willimon did talk about Lucas up while talking about Zoe's death in the beginning of season 2. Couric asked if Zoe's boyfriend would come back in season 3.

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Willimon gave his standard answer -- that he is using to answer when asked about the future of many characters on the show -- suggesting that there was only one way to find out. But it seems likely that Lucas will return as that would ruin things for Frank drastically. 

So, if Lucas were to make it back somehow, Frank might need to bloody his hands again.

The third season of House of Cards will film in Maryland, where the first and second seasons were also shot. Initially, the continuation of filming of the third season of the Netflix series was fraught with troubles over the past few weeks as the producers weren't getting permission from the State of Maryland. But the issue was finally resolved on April 25.

Watch Willimon's interview with Couric here: