Criminal Minds - Spoilers

Episodes 3.19 & 4.01: Sarah Matthew, a leading profiling specialist from Scotland Yard in England, is in the NY FBI field office as part of a joint task force with Hotch and the team. She is about the same level as Hotchner and runs the NY FBI office. While she is here, she flirts with one of the members of the team. Source: SpoilerFix.com