<P> His specialty, just like Dr. Brennan, is in the analysis of remains, especially identifying cause of death and weapons from marks on skeletal remains . It is usually his task to remove the flesh from the bones, a process known as maceration . Because of his tremendous intellect, he has a strong broad - based knowledge of many of the specialties in the Jeffersonian lab . </P> <P> Zack's best friend is Jack Hodgins . Although it at first appears Hodgins and Zack are roommates, it is later revealed he rents the apartment over Hodgins' garage . Zack also carpools with Hodgins because he can neither drive a car nor ride a bike . He once made a comment to Booth that, if Booth shared Zack's knowledge of Structural Engineering, he would be afraid to drive as well (Season 1 "The Man on Death Row"). In The Man in the Bear, Zack and Hodgins compete for the affections of a beautiful delivery lady until they realize in the end that she might be bisexual or homosexual, when she shows an attraction to forensic artist Angela Montenegro . </P> <P> Episodes towards the end of Season 1 reveal Zack's colleagues, especially Dr. Goodman, feel he has become too comfortable as Dr. Brennan's assistant and is therefore not completing any of his work towards his doctorate degrees to avoid having to move into a new position . Goodman and Hodgins conspire to make Zack less comfortable in his position to motivate him to complete his studies, thus encouraging him to fulfill his potential of more than just an assistant . </P> <P> Right before he was about to complete his doctorate, Zack asks the Jeffersonian's new forensics head, Dr. Camille Saroyan, if he can have a job working at the Jeffersonian . She replies she could not put him in front of a court to testify because people would not take him seriously . Zack then goes to ask Angela for fashion advice, and she gives him a complete makeover that includes a new haircut and a suit . After completing his doctorate and getting the makeover from Angela, Zack again asks Cam for a job; and she gives it to him, saying "Who am I to break up the team?" </P>

What episode of bones does zack kill the lobbyist