Having completed their deal with Tuco in the junkyard, Walt and Jesse realize just how crazy and violent he can be. Jesse is convinced that he has seen Tuco's black SUV going up and down his street. Walt puts it down to paranoia—until he sees a black SUV parked just down the block from his house. Jesse's solution is to shoot Tuco before he kills them but Walt has a better idea using ricin. Panic sets in however when they think Tuco is killing his associates. Hank reviews the security surveillance footage of the warehouse break-in without realizing it's Walt and Jesse. Skyler tells Hank about Marie's shoplifting and gets a surprising reaction.