 LaGuerta and Batista both believe that he did this in vengeance, though little was proven.His prostitute-hiring tendencies leads to a call girl dead from a heroin overdose which, while not his fault, led to LaGuerta attempting to cover up the no-fault crime scene claiming the low clearance rate as unacceptable.However, Debra continues to search after a visit from the call girl's father, leading to her discovery of Matthews' involvement.