• Season 4 Episode 14
  • The Becoming

  • Airdate:10.08.2008.

The nurses' objections to McSteamy's trysts lead to the instating of a new "date and tell" policy. Meanwhile news of Burke's latest career achievements force Cristina to face her feelings for her ex, Meredith and Derek admit a veteran soldier into their clinical trial, and Callie turns to Sloan in her time of need 

series regulars:

    Ellen Pompeo as Meredith Grey
    Patrick Dempsey as Derek Shepherd
    Sandra Oh as Cristina Yang
    Katherine Heigl as Isobel "Izzie" Stevens
    Justin Chambers as Alex Karev
    T.R. Knight as George O'Malley
    Chandra Wilson as Miranda Bailey
    James Pickens, Jr. as Richard Webber
    Sara Ramirez as Callie Torres
    Eric Dane as Mark Sloan
    Chyler Leigh as Lexie Grey
    Brooke Smith as Erica Hahn

guest cast:

    my Madigan as Dr. Wyatt
    Lauren Stamile as Rose
    John M. Jackson as Kevin
    Benny Ciaramello as Darren
    Zilah Mendoza as Kyra
    David Giuntoli as Todd
    Loretta Devine as Adele.