A new teaser for season 4 of House of Cards flashes back to one of Frank Underwood's (Kevin Spacey) sordid crimes.

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The clip strongly hints at Frank's murder of Zoe Barnes (Kate Mara) as it shows a bouquet lying on the train tracks, quickly moving to Frank's campaign message--"Putting America Back on Track"--for reelection as president.

This also seems to suggest that Frank might continue playing dirty as he has done in the past to get to where he needs to be, meaning anything is fair game.

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The first teaser for the season was dropped during the live telecast of the Republican Presidential debate on CNN.

The fictive campaign spot for Frank was revealed teasing season 4 of House of Cards streams a hopeful view of the country and all its people living free, in peaceful harmony. The voiceover for the spot runs: "It's a new day in America; today more people will go to work, return to their families and sleep more soundly than ever before all because one man refuses to settle, putting people before politics. That man is Frank Underwood."

In another trailer, titled "The Leader We Deserve," Frank Underwood (Kevin Spacey) address the nation, justifying why he should be reelected and America deserves him. As he speaks from his White House desk, the monologue is interspersed with flashbacks of all his dirty deeds--the various seductions and murders.

Season 4 of House of Cards is set to return on March 4.

Watch the new teaser: