[s6e18] - Knockout

Feeling sidelined, Gibbs conducts a parallel investigation into Vance’s past. This creates a "sparring match" between the two leaders as Gibbs uncovers discrepancies in Vance's official records. The "Identity Switch" Mystery

Vance travels to Chicago with Ziva and McGee, focusing on local crime boss Joe Banks as a primary suspect. [S6E18] Knockout

This episode, which originally aired on March 17, 2009, on CBS , is a pivotal character study of Director Leon Vance. Departing from the standard procedural format, "Knockout" delves into the personal history of Leon Vance while creating tension between him and Special Agent Leroy Jethro Gibbs. Core Plot and Narrative which originally aired on March 17