Season 6 of ABC's hit crime series, Castle, started off on quite the high note, with Beckett (Stana Katic) accepting Castle's (Nathan Filion) marriage proposal. However, the two's relationship has been somewhat put on the back burner as of late due to them having to solve murder cases.

In the new promo video for episode 11, it seems as though Beckett is having second thoughts over Castle's commitment to their future holy union, as she tells him, "I'm worried about your commitment to our engagement.

To make matters more complex, a reporter queries Castle on whether he'll be getting back together with his ex-wife.

While the marriage dilemma looks as though it will be the major storyline to the installment, the mystery surrounding Jenny Tyson, the Triple Killer, is also going to be in the episode.

More Season 6 Episode 11 Spoilers On Beckett & Castle's Relationship

With the NYPD not knowing whether Tyson is alive or not, it's reportedly feasible that she may resurface with a new face, according to creator Andrew W. Marlow, who spoke to TVLine on Nov. 25.

"Castle shot Tyson multiple times in the chest. He fell 100 feet into the water. How could he have possibly survived that," he said. I think Vera Lynn said it best when she sang, 'We'll meet again. Don't know where... Don't know when.... '"

ABC's Castle will be airing its next episode on Monday, Jan. 6 at 10 p.m. EDT. Be sure to keep checking back for more of the latest details on the popular TV series. The above-mentioned promo video can be viewed below.

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Castle, Television, ABC