Building the Case

The department's case against prison gangs is building and the rookies must learn how to find evidence that will take them down for good. Purto redeems himself with the STIU unit and assists in a major SNM drug bust. D'Angelo finally finds drugs in the open dormitory. Mangin and Cordova respond to an emergency involving an irate inmate. Fabian gets discouraged and has to call his brother for some help.