'Castle' Season 4 promo: Rick takes the news hard

nathan-fillion-castle-s4.jpgThe newest promo for Season 4 of "Castle" uses a lot of the same footage of the last "Castle" promo, but to much different effect.

Where that last one was all about the not-yet-consummated romance between Castle ( Nathan Fillion) and Beckett ( Stana Katic), this one deals more directly with the consequences of Beckett getting shot in last season's finale. There are a couple flashes of things we haven't seen before, including Alexis ( Molly Quinn) and Martha ( Susan Sullivan) meeting Castle at the hospital, a quick glimpse of new boss Penny Johnson Jerald and some of Beckett's colleagues also not taking the news well.

We're not buying the flatline that runs through the promo -- we've said it before, and we'll say it again: Beckett's not dying -- but the thing that really sticks with us is the voiceover near the end of the 30-second spot: "This is my fault." Maybe not directly, but Castle pushing the investigation into Beckett's mom's death certainly contributed to Beckett taking a bullet. We'll be curious to see how the show deals with that fallout.

Take a look at the teaser below and tell us what you think. "Castle" premieres at 10 p.m. ET Monday, Sept. 19 on ABC.

Photo/Video credit: ABC