We pick up where we left off at the end of last season -- Shawn has just realized his father's life is in danger. He rushes to find him, but it's too late. One of Henry's old partners, Jerry Carp, has already shot Henry because Henry found out Jerry was involved in a police scandal years ago, and Jerry needed to keep Henry quiet. Shawn rushes Henry to the hospital. After Henry makes it out of surgery okay, Juliet urges Shawn to not get involved with catching Henry's shooter. Shawn doesn't listen; he recruits Gus and they set out to find and arrest Carp.