Castle Season 6 spoilers keep Caskett fans excited for the show's new chapter. The premiere episode ("Valkyrie") on Sept. 23 will show Rick Castle (Nathan Fillion) and Kate Beckett (Stana Katic) where they left off in the Season 5 finale - during a proposal by the swing. ABC has released fabulous promo photos showing a glammed up Nathan and Stana as a treat to further build up the excitement for the hit series.

"Curiouser [and] curiouser. If u had to label Castle, what would you label it? Procedural? Comedy? Dramedy? Romantic Comedy?" On Twitter, Stana Katic asked Caskett fans awaiting teasers for Castle Season 6. One fan tweets back, "I'd label it awesome!"

"Awesome" is not a bad way to label the ABC series that is several things at once. At its core, it's a procedural drama. But titular character Rick Castle comes to NYPD and breaks the procedural routine. Rick is about best-selling novels, pop culture, geek references, urban legends, romance, and comedy. Above being "ruggedly handsome," Castle justifies the series' existence for being awesome himself.

"Real relationships are not compromised because one person is having success in their career," Stana Katic tells TV Line in a Castle Season 6 scoop. It's a strong teaser coming from Stana, who has, in a separate interview said Beckett should get the Washington job in spite of Rick's proposal. She seems to be hinting that Kate's career should not cancel any Caskett wedding possibility. Stana further hints that "they" (Andrew Marlowe and showrunners) will be taking "storytelling risks" this season.

"Regardless of [Kate's] answer [to Rick's proposal], it is going to significantly change their relationship," Castle creator Andrew Marlowe told TV Guide.

Nathan Fillion and Stana Katic are joined by Lisa Edelstein in Castle Season 6. House, M.D. fans will be delighted to see "Lisa Cuddy" in a new role, this time as someone whom Kate Beckett wishes to emulate.

The Castle Season 6 premiere episode is called "Valkyrie." Caskett fans are expected to tune in to ABC on Sept. 23. Check out the slideshow to see Nathan Fillion, Stana Katic, and other Castle stars in glam and fab 'shoot. Watch the video below as Kate tells Rick, "There's something I have to tell you."

VIDEO: Castle Season 6 Premiere Episode, "Valkyrie" Teaser

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