Reese and Finch pursue young trader at a major investment bank who is caught up in a multimillion-dollar financial scam.
Elizabeth heads to Brussels to seek NATO's support against Russia when it threatens to invade Bulgaria; Henry turns to a former operative for help; Elizabeth discovers information about her friend that makes her question his loyalty.
Fisher and Sons faces an unannounced inspection; Ruth quits the flower shop; Claire attends her art school interview.
The squad makes a quick arrest when a student is raped at gunpoint in her apartment, but the defense attorney works to undermine their police work.
Detectives find that DNA evidence seems to link the murder of a CSU investigator and an attack on a young journalist (Camille Chen).