SOAPnet

Carrie Southworth as Claire on "General Hospital: Night Shift."

Missing "General Hospital: Night Shift" star Carrie Southworth? The SOAPnet.com fave, better known as beautiful and brainy "GH" intern Dr. Claire Simpson, is guest-starring on ABC's "Castle" tonight!

You can catch her in one of the show's twisty mysteries at 10PM/9c.

When you're done, keep the Carrie-marathon going with SOAPnet.com webisode series "Night Shift: Claire and Kyle." It's Carrie and costar Adam Grimes as Dr. Kyle Julian -- after the "GH" after-hours.

Who's your favorite "Night Shift" actor?