The team becomes enmeshed in retirement home drama when the body of an old man is found in an acid dump site; back at the lab, discussion of marriage and kids dominates the conversation.
When two women are found dead dressed as fairytale characters, Castle and Beckett must race to find the killer before he strikes again.
Owen and Amelia hash out their problems as they work a trauma case together, and Bailey tries to mend her relationship with Richard.
