Vedette Lim

George O'Malley's mother comes to Seattle Grace for help after another hospital botches her surgery; a medical miracle inspires the residents; Jackson's suspicions about Mark and Lexie interfere with work.

Castle is captured and forced to work with strangers to solve deranged puzzles and mind games, while Beckett and the 12th precinct must race against time to rescue Castle and catch a killer.

The firehouse crew goes to the scene of a railroad accident; Boden must make a big decision about his future; Severide learns more about the woman he saw with his father; Shay and Dawson continue to butt heads.

The shooting of a child in their neighbourhood forces Cruz and his brother to think about the gang, Isabella gets Mills to dress up for a gala, Casey feels sad he will be seeing Dawson less, and Shay gets in deeper with Devon.

The second season draws to a dramatic close as the crew tackle a roaring fire at a school. Dawson takes her exam and Boden's plans go awry.

Severide comes across a boy in need of help while out on a jog. Boden and McLeod clash over the future of the firehouse. Mouch and Greg Sullivan debate on Otis' podcast.