'Castle' sneak peek: Is Castle cheating on Beckett?

This doesn't look good.

Just as we're preparing to bask in the glow of Castle (Nathan Fillion) and Beckett's (Stana Katic) new romance in tonight's (Sept. 24) premiere of "Castle", ABC released two very incriminating stills.

Hmph! According to the episode description for "Cloudy with a Chance of Murder" (airing Oct. 1), "on Beckett's first day back from her suspension, she and Castle are thrown into the salacious world of local TV news when a weather girl is found dead."

Salacious indeed, as you can see from these snaps of some harlot woman (Jodi Lyn O'Keefe) straddling Castle on a couch.

We wish he didn't look so amused...but maybe it's because he knows he's got the real thing waiting for him in the wings.

What do you think, "Castle" fans? Is Rick already returning to his philandering ways -- or just the victim of an oversexed TV personality?