Zachary Fardon is headed home after leaving his position as U.S. Attorney for the Northern District of Illinois in March. He's just not returning to the private practice perch that many expected.

Fardon will be launching a Chicago office for King & Spalding, the firm announced Wednesday, marking a surprising end to a highly competitive recruiting process that many presumed would see the former Latham & Watkins partner return to the firm he left in 2013 to lead the U.S. Department of Justice's Windy City outpost.

Instead, Fardon's roots with King & Spalding came calling. He started his career as an associate in the firm's Washington, D.C., office from 1993 to 1997, working under former U.S. Attorney General Griffin Bell, a senior partner at King & Spalding who died in 2009.