"Critical" (寿命中断 (クリティカル) Kuritikaru?, lit. "Life Interrupt") is the 2nd episode of the Toaru Kagaku no Railgun S anime series, and the 26th episode of the anime series adaptation of the Toaru Kagaku no Railgun manga series. It was first broadcast on April 20, 2013. The script was written by Minikami Seishi, the episode storyboarded by Takayanagi Shigehito, and directed Takashima Daisuke.