CSI: NY (2004)

S1E1 Blink

Title: Blink Plot: The team stumbles upon three young women who have suffered similar horrific attacks. Their sole witness is one of the survivors, who can only convey information through blinking. Investigating the crime scenes, the team discovers photographs pointing to a couple that had supported one of the victims. Meanwhile, the boyfriend of the victim insists he hasn't been in contact with her for weeks, raising further questions about the case.