Headache
- Episode aired May 8, 2015
- TV-14
- 42m
As Hank and Nick get close to identifying a vicious serial killer, Wu's life is put into jeopardy.As Hank and Nick get close to identifying a vicious serial killer, Wu's life is put into jeopardy.As Hank and Nick get close to identifying a vicious serial killer, Wu's life is put into jeopardy.