Rumors are percolating that the new season of "Castle" could find author Rick Castle (Nathan Fillion) and Det. Kate Beckett (Stana Katic) expecting their first child together.

There have been weeks of speculation about Beckett in the upcoming season. Some believe she will enter the field or politics. Others believes she will become captain of the department now that it's been confirmed Penny Johnson will not be returning as Captain Gates. CarterMatt poses the question of what kind of storyline would make it possible for the two costars to have a child together.

According to the website, show creators have briefly touched on that possibility in the past, with such episodes as "The Good, the Bad, and the Baby."

CarterMatt adds that a baby would "be a really fun story for the two to tackle if it comes as a surprise. Nathan Fillion and Stana Katic have both shown to be great at funnier scenes, and there would be many that would come out of watching these two plan for it. If there was ever a concern about a lack of fun side plots, this is an easy fix."

Previously, CarterMatt reported, that the upcoming eighth season is already being billed as something that's going to be "different." Throughout the season, Castle and Beckett are expected to find themselves pitted against some of the most evil villains they have ever faced.

With new showrunners Alexi Hawley and Terence Paul Winter looking to put their own stamp on the show, the website also previously speculated about a Beckett run for political office. The end of Season 7 touched on such possibilities with a colleague passionately encouraging her to go in that direction.

After months of contract haggling and growing speculation, Katic recently agreed to return to the show alongside Fillion for what could be a final season. Both stars' contracts ended at the close of last season.