Marco Antonio Rodriguez

In the Season Four finale, Finch and Root race to save The Machine, which has been located by its AI rival, Samaritan. Also, Reese is caught in the middle of the final showdown between rival crime bosses Elias and Dominic.

Michael & Lincoln must handover Whistler to Susan so they can save LJ and Sofia's lives; Mahone seizes a golden opportunity; T-Bag shows Sona who's boss; a familiar face enters Sona as another leaves it in a body bag.

A string of dog poisonings in the suburbs puts Jack and Dan on the trail of a well-meaning yet oblivious vigilante whose plan to sabotage the meth labs operating throughout his neighborhood has attracted a dangerous amount of attention and a deadly out-of-town visitor.