While Castle and Beckett team up with a hot-shot detective from Hong Kong to investigate a man murdered in the park, Beckett realizes that neither her Hong Kong colleague nor the victim may be quite who they seem.moreless
Sonya and Marco try their best to get important information out of a scared young witness; information that will help them learn the identity of The Beast. Meanwhile, Charlotte contacts a friend from her past to help her with her tunnel situation, Daniel and Adriana do a little sleuthing of their own and Marco learns more about Hank's past and the tragic history he and Sonya share.moreless
Megan and Tommy must separate out fact from fiction to determine if a child's murder was severe child abuse or something else.
Naomi and Max visit a marriage counselor to try to work out their problems, and Teddy finally tells Silver he'll give her the opportunity to have a baby, but his offer comes with some an unexpected twist. Navid takes advantage of Liam's celebrity status to help him get into an elite secret society, and Annie rushes to San Jose to reveal her true feeling to Riley before he undergoes experimental spinal surgery.moreless
Jericho gets ready for a very important visitor from the new Cheyenne government. Hawkins and Chavez work to find the new leaderships secrets.
Denny needs a heart or else. Izzie and George go crazy trying to get him one. Derek has the life of a friend in his hands as he operates on Burke who has been shot. Burke cannot operate on Denny after Denny's heart stopped and now Denny is in a dire condition. Cristina gets put in charge of the ER and she is worried about Burke.
Part 2 of a three-hour season finale. This episode is the first hour of a two-hour episode which is two hours long and will air on a Monday in a different time slot than it would on Sunday. Aired on Monday, May 15, 2006 from 9 PM EST to 10 PM EST.