• Season 4 Episode 17
  • Freedom, Part 2

  • Airdate:10.08.2008.

Meredith and Derek are at odds over whether or not to continue with their 13th clinical trial patient and the doctors lift the final critical pieces of cement from the young boy's body.

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

written by:

Shonda Rhimes

directed by:

Rob Corn