Actress Alexie Gilmore is busy shooting an episode of Private Practice this week.

After that, her character will "cross over" to Grey's Anatomy in the ABC drama's latest joint venture with its successful spinoff. As we know, the hospitals in Seattle and Los Angeles have shared patients and doctors with one another in seasons' past.

On Private Practice, Gilmore plays a dying woman who needs a kidney transplant, and her sister is the only person who can give it to her. According to the L.A. Times, she's already had to undergo the torso mold to prepare for her surgery scene.

No word yet on what will happen to her character on Grey's Anatomy.

The crossover concept is part of the network's multiple-character sweeps plan to boost viewership for both. Judging by last season's, it should be a success. Chandra Wilson's character, Dr. Miranda Bailey, is believed to be crossing over to Private Practice this year.

Steve Marsi is the Managing Editor of TV Fanatic. Follow him on Google+ or email him here.