 McNulty expresses regret that he could not arrest his archrival before he died, and displays an odd admiration for Stringer's lofty dreams and a grudging respect for his talent as a drug kingpin.In essence, McNulty feels purposeless without his adversary, and it is this sense of aimlessness that leads him to transfer to patrol in the Western District and straighten his life out.In the season 5 episode "Late Editions", Clay Davis, while describing to Lester Freamon how drug money is routed from the kingpins to state and city politicians through their lawyers, mentions how he conned a fellow named "Bell" into giving him a great deal of money because Davis had convinced him that he would be able to use his connections to push his development forward quickly.