The sixth season of Without a Trace began airing in United States on September 27, 2007.

This season included a cross-over with CSI: Crime Scene Investigation involving Jack and Gil Grissom tracking a serial killer from Las Vegas to New York.

[1] This established Without a Trace as part of the same fictional universe as the tetralogy of CSI shows and Cold Case.

The sixth season of Without a Trace was not released on DVD in region 1 until May 7, 2013,[2] but was first released in region 2 in Germany on November 20, 2009[3] on and in the UK on July 5, 2010.

[4] When a serial killer eludes capture in Nevada and escapes with his son to New York, Jack and the team pick up the trail with the help of CSI Las Vegas team leader Gil Grissom (William Petersen).