A mystery tweet.

“General Hospital’s” new alum Emily Wilson (Port Charles’ ex-Ellie Trout) recently tweeted a mysterious photo featuring the “Castle” logo. Fellow alum Bradford Anderson tweeted his congratulations. It looks as if Wilson landed a guest appearance on the ABC’s Primetime series featuring Nathan Fillion (ex-Joey Buchanan, “One Life To Live”). Soaps.com will report back when an air date is available.

Wilson is no stranger to Primetime and has been seen on “Bones,” “CSI: NY,” “NCIS,” and “Californication.” “Castle” airs Mondays at 10:00 PM.