Kate's ex-husband, Tommy Wilmette, sues for custody of Sara. A possible heart transplant comes to the hospital. With Austin tied up in court, Nyland 0-1 in transplants (ep #9), and Kronk inexperienced, Phillip calls Jeffrey in to perform the transplant. Jeffrey's titanic ego meets its match in Wilmette's. The new OB brings in a 'hidden patient', a woman six months brain dead, kept alive to deliver her unborn child.