 Rinehart shows up to find Rob packing his things , intent on leaving town . After a bitter argument , with Rinehart revealing that she knew Rob murdered Pankow , Rob reveals his true self to Rinehart . However , before Rob prepares to attack her , she shows deep sympathy for him , throwing Rob off @-@ guard . At that moment , the agents arrive with guns drawn , having found Sylvia 's body . Rinehart tells Rob to be the good person she knows he is capable of being . Instead , Rob charges at Mulder and is shot twice in the chest , committing suicide by cop . As Rob lies dying , Rinehart asks , " Why ? " To which he replies , " I can 't be something I 'm not . " 
