← Previous Next → 5x09 In the Midnight Hour 3.5/5 (2 votes) First Aired: Nov. 20, 2008 on ABC Summary: Meredith, Cristina and Bailey come to Lexie and Sadie's rescue when a not-so-routine surgery goes horribly wrong, as Owen and Derek treat a man seriously injured while sleepwalking and Mark comforts the sleepwalker's distraught daughter and has feelings for Lexie.

Main Characters in this Episode

• Dr. Meredi…
• Dr. Cristi…
• Dr. Alex K…
• Dr. Mirand…
• Dr. Richar…
• Dr. Callie…

• Dr. Mark S…
• Dr. Lexie …
• Dr. Derek …
• Denny Duqu…
• Dr. Owen H…
• Dr. Steve …

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Guest Stars Dr. Izzie Stevens played by Katherine Heigl Dr. George O'Malley played by T.R. Knight Dr. Sadie Harris played by Melissa George Seth Hammer played by Joshua Malina Lauren Hammer played by Leslie Grossman Arthur Saltonoff played by John Allen Nelson Ivy Soltanoff played by Madeline Carroll Dr. Ryan Spalding played by Brandon Scott (II) Intern Graciella played by Gloria Garayua Intern Megan played by Molly Kidder Intern Leo played by Winston Story Intern Pierce played by Joseph Williamson ER Nurse played by Jody Sclavos EMT played by Nicole Cummins Appendectomy Patient played by Brad Everett Young More