ABC's 'Castle' Season 6 ended with Rick's tragic car crash which put a halt on a highly anticipated TV moment, his wedding date with Kate Beckett. This shocking turn of events leaves fans with many questions about what's in store for Season 7 as Kate desperately searches for the culprit.

Nathan Fillon, who plays the role of Castle, told TVLine, "We made people wait a long time for these two characters to finally get together. Now that they are together, how much longer can we make people wait for the wedding, I think becomes my question. You don't want people to become bored in the waiting."

Executive producer Andrew Marlowe teased that the Season 7 mid-season finale is going to air a two-part episode featuring a more profound theme, "We're going to deal with it in the first couple of episodes, we're going to get back to the kinds of Castle episodes that we all know and love and expect, with a relationship that has deeper understanding, and also deeper curiosity to it," he explained.

Meanwhile, Molly Quinn's character, Alexis, is bound to develop a new love interest in the upcoming season. The actress has this to say about it during the show's panel at the recently concluded San Diego Comic-con, "I think fans want to see [Alexis] unencumbered maybe. I actually like that better. It's more fun for me to play off of what my character is going through versus what she is going through in a relationship...."

'Castle' Season 7 is set to return on ABC on September 29, Monday, at 10 PM EST.