“The Flash” is back after a long midseason break, and Barry has some difficult choices to make. In the first episode of the New Year, Barry deals with old foe Leonard Snart (aka Captain Cold) as well as the decision to focus on enhancing his abilities versus trying to save everyone all the time. Meanwhile, Caitlin looks into Firestorm and Iris moves in with Eddie despite knowing that Barry’s in love with her.
This week’s episode featured a very special guest star: “Arrow’s” Felicity Smoak (Emily Bett Rickards)! Felicity arrived in Central City and proved to be an asset for the S.T.A.R Labs team as they faced a threat whose origins were more close to home than they expected. While she fit into the professional team very well, she shook up Barry’s personal life a bit when she met Iris, leading to the normal amount of awkwardness that usually ensues when Felicity and Barry are concerned.