<P> Upon finding a new body, McNulty mutilates the decedent to show bite marks and defensive wounds . When investigating the "homeless killer", McNulty and Greggs travel to the FBI Academy in Quantico, Virginia for assistance . McNulty realizes that he can no longer falsify the murders on real corpses as there is too large a police presence, so he instead takes a mentally ill homeless man off the streets and stages a photograph of a murder to send to Sun reporter Scott Templeton, before taking the man to a homeless shelter in Richmond with fake identification . </P> <P> McNulty has been voicing the killer in telephone calls to Templeton . After doing the voice analysis, the FBI provides McNulty and Greggs with a psychological profile of the homeless killer, inadvertently giving a near - perfect description of McNulty himself . Having his character flaws spelled out for him gives McNulty second thoughts about what he has done . He confesses his deception to Greggs, who in turn informs Daniels, now the BPD's Deputy Commissioner for Operations . Daniels and Pearlman subsequently meet with Acting Commissioner Rawls, State's Attorney Rupert Bond, and the mayor's office . Daniels and Rawls confront McNulty, informing him that this will be his last CID case . </P> <P> The case is "solved" when McNulty encounters a mentally ill homeless man who has started using the modus operandi of the phony serial killer . McNulty brings the man, his final criminal, to justice . McNulty and Freamon then leave the police department . After attending a detective's wake (of sorts) in their honor, McNulty leaves the bar sober and returns home, where he and Russell have reconciled . The next day, McNulty returns to Richmond, finds the homeless man he had put there, and drives him back to Baltimore . On the way back, he stops his car, gets out and looks at the city, leading to the series - ending montage . </P> <P> Jim Shelley of The Guardian has described the character as "irresistibly charming, a classic anti-hero; a modern - day Rockford ." Entertainment Weekly said that the character was exemplary of the funky feel of the show citing his naturalistic dialogue, soulful voice and easy rapport with his African - American work partners . The character has been described as defying genre conventions--although his actions drive several plot points he is not quite the central character implied by the show's opening or promotional material . Flak Magazine also picked McNulty as a central character and commented on the uncommon experience of having the main character fit to a standard police character archetype ("He has poor impulse control . He's personally fearless and outspoken, and he bangs babes like a hunchback rings bells ...") but also exposing the archetype as self - destructive and emotionally immature . Salon.com described McNulty as "The heart, soul and oft - impaired nervous system of "The Wire" ", again selecting him as a central character . Salon also chose McNulty's pride as his main character trait, saying that this aspect of his personality made him a successful investigator and a failure in most other aspects of his life . Entertainment Weekly picked McNulty as offering one of the show's most wicked ironies: he is one of the characters you would expect to be on the side of law and order as a police detective but they describe him as a "boozing cop who pisses on authority and order ." </P>

What happens to mcnulty at the end of the wire
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