Invasion (Grey's Anatomy)


"Invasion" is the fifth episode of the 6th season of the American television medical drama Grey's Anatomy, and the show's 107th episode overall. It was written by Mark Wilding and directed by Tony Phelan. The episode was originally broadcast on the American Broadcasting Company in the United States on October 15, 2009. In the episode, the physicians of Seattle Grace Hospital must learn to co-operate with new Mercy West residents, who do not act in a kind manner to them. Other storylines include Dr. Callie Torres 's father returning to the hospital to condemn her homosexuality, and Dr. Izzie Stevens putting her career into jeopardy after administering the wrong treatment to a patient.
The episode was Heigl's last appearance before her five-episode hiatus to film a movie. It is set in a fictional hospital in Seattle, Washington. Héctor Elizondo returned as a guest star, while Jesse Williams, Sarah Drew, Robert Baker, and Nora Zehetner made their first appearances. "Invasion" received generally positive reviews, with critics praising Drew's, Jessica Capshaw's, Ellen Pompeo's, and Sandra Oh's performances. Upon its initial airing, the episode in the United States was viewed by 13.79 million people, garnered a 5.0/13 Nielsen rating/share in the 18–49 demographic and ranked third for the night in terms of viewership.

Plot

The hospital receives several surgical residents from Mercy West as they enter Seattle Grace, a repercussion of the recent merger. Dr. Meredith Grey is recovering from her liver transplantation surgery, after donating a portion of it to her father. In the residents' lounge, Dr. Izzie Stevens tries to explain to Mercy West resident Dr. Reed Adamson that she should not use a certain locker, due to it formerly belonging to the deceased Dr. George O'Malley. Adamson ignores her wishes, and uses the locker, leading Stevens to threatening to fight her. Shortly thereafter, Dr. Cristina Yang and Dr. Lexie Grey are working in the emergency room, when Dr. Owen Hunt embarrasses Yang by taking Mercy West resident Dr. Jackson Avery ' side in a disagreement. Despite her mindset that all Mercy West residents would act in the manner of Adamson, Stevens develops a friendship with Dr. Charles Percy. After months of the two not speaking, Dr. Callie Torres 's father, Carlos, shows up to the hospital with a priest, trying to condemn Torres for her concurrence in homosexuality.
Under the supervision of Dr. Derek Shepherd, Lexie works with Mercy West resident Dr. April Kepner on a burglar, and the two get in several disagreements, leading Lexie to steal her diary. Dr. Alex Karev and Adamson continuously argue over the course of treatment for a patient, leading the patient's daughter to yell at them in disbelief. Angry about the revelation that Percy was using her, Stevens accidentally administers the wrong dialysis to a patient, making her an unviable candidate for the kidney transplant she was scheduled to receive. After arguing over surgical cases for the entirety of the day, Yang comes to the realization that she needs a cardiothoracic surgeon to work at the hospital. After being mistreated by Kepner, Lexie begins to mock her about what is written in her diary, thus ruining her emotionally, but subsequently apologizes. Dr. Arizona Robbins, Torres' girlfriend, talks to Carlos, and convinces him to accept his daughter's sexuality. Having found out about Stevens' mistake, Dr. Miranda Bailey reprimands her reports her to the chief of surgery Dr. Richard Webber. Webber asks Stevens to come into her office, and he fires her from the staff, noting that Hunt, Shepherd, and Karev had concerns with her coming back to work so early. Stevens departs, writing Karev a Dear John letter, causing him to cry in front of Meredith and Yang.

Production

The episode was written by Mark Wilding and directed by Tony Phelan. Jenny Barak edited the episode's music and Donald Lee Harris served as production designer. Eric Dane was absent from the episode. Featured music included The Myrmidon's "Clap", Traildriver's "I Want You Now", and Greg Laswell's remake of "Your Ghost". "Invasion" was the last episode Heigl appeared in, before her five-episode hiatus to film the romantic comedy Life As We Know It.
Wilding called the guest stars "a blast to work with". He deemed the theme of the episode "invasion", adding that all the character's lives were being invaded. In the episode, Stevens makes a mistake, following a disagreement with Percy. Wilding commented that Stevens was originally seeking friendship with Percy, because he reminded her of O'Malley. At the conclusion of the episode, Torres ultimately reunites with her father Carlos. Wilding offered his insight on this and the overall episode:

Reception

Broadcasting

"Invasion" was first broadcast on October 15, 2009 in the United States on the American Broadcasting Company. The episode was viewed by a total of 13.79 million people, down 0.34% from the previous episode "Tainted Obligation", which garnered 14.13 million viewers. In terms of viewership, "Invasion" ranked third for the night, just behind CBS's juggernauts and The Mentalist. The episode did not win in viewership, but its 5.0/13 Nielsen rating ranked first in its 9:00 Eastern time-slot and the entire night, for both the rating and share percentages of the key 18–49 demographic, beating out CSI, The Mentalist, Private Practice, and The Office. Although its rating won for the night, it was a decrease from the previous episode, which garnered a 5.4/14 rating/share in the 18–49 demographic.
's character was well received.

Critical reception

The episode received positive reviews among television critics. The Los Angeles Times Carina MacKenzie's review of the episode was largely positive, though she called it "immature" of the episode's writers to have the characters in constant battle with one another, and deemed the Mercy West resident's orange scrubs unnecessary. MacKenzie highly praised the characterization of Kepner, in addition to Capshaw's performance, commenting: "Jessica Capshaw has an incredible ability to take even the most melodramatic of Grey's speeches and deliver them with a subtlety and an honesty that makes them come off as sincere instead of overwrought." MacKenzie concluded that Karev, Yang, and Meredith had appropriate reactions to Stevens' departure.
Michael Pascua of The Huffington Post praised the scene in which Yang broke down to Meredith, noting the exceptional chemistry between them. Pascua was positive of the storyline between Torres, Carlos, and Robbins, writing that it was nice to see an emphasis on the gay storyline. Adam Bryant of TV Guide wrote that Baker's character "seems like the only decent guy in the bunch", though PopSugar asserted that Williams' character "proves to be most likable of the new doctors".