This story takes place between Teenage Mutant Ninja Turtles (2011) #12 and 13.
*Casey Jones has a peculiar life- hockey-playing student by day, vigilante by night. Throw in an alcoholic, abusive father and it's no wonder you've got a guy who likes to wail on criminals with sports equipment! One night though, the criminal element strikes too close to home, and Casey is forced to decide how far he'll go to keep a very important promise. A crucial moment in the life of Casey Jones! *Source: idwpublishing.com