Despite Ziva mentioning him a few times, Cruz didn't make his official appearance until the episode Two-Faced (episode) where he surprised Ziva at work who then proceeded to introduce him to her colleagues.
It was later revealed that Ray was also a CIA Agent assigned to NCIS in regards to the recent murders carried out by the Port to Port Killer which led to an angry Ziva breaking up with him.
Sometime later in the season finale Pyramid (episode), he was away when Ziva went to his hotel and walked into the room where Jonas Cobb captured her. He assisted in helping find Ziva and accompanied NCIS agents into the barn where she was found.
Near the end of the episode he told Ziva that he loves her, and stated that he wanted to marry her but instead gave Ziva an empty ring box. The two of them exchanged a kiss before parting due to the fact that Ray had to leave the country for a special assignment that involved Trent Kort but when Ziva asked Ray what it was, Cruz told her it was nothing before kissing her again.
A few months later, in A Desperate Man (episode), Cruz arrived back in D.C. and planned to meet and have dinner with Ziva, only for Cruz to never show. As a result, a hurt and angry Ziva began ignoring him. At the time that this happened, Anthony DiNozzo realized that Cruz knew the victim whose death the NCIS team were investigating. Ziva later went to talk to Cruz but was left stunned when he proposed to her. Ziva opted to excuse herself and think about it but before she could decided, she discovered that Cruz had killed the female Lt. with Cruz claiming that it was accidental collateral damage in his unsanctioned hunt for a terrorist.
Enraged, Ziva confronted him and punched him before breaking up with him for good. She later stormed out of the airstrip where her boss, Leroy Jethro Gibbs met her and brought her away.
As a result, Cruz was eventually arrested, taken into custody and presumably jailed after losing Ziva and his job at the CIA as a result of his actions.
- Lieutenant Commander Maya Burris- (Shot three times with a sniper rifle)
- Barry Norton - (Tampered with the brakes in his car and crashed to his death)
- A long running joke by DiNozzo is that he calls Ray, C.I. Ray; which is a pun on Cruz's name and the fact that he is an agent of the C.I.A. and could possibly be a double entendre referring to the character of G.I. Joe.
- Enrique Murciano who plays Cruz is known for his role as FBI Special Agent Danny Taylor in the series, "Without A Trace".
- Like Timothy McGee, Cruz wears his right watch on his right hand as seen during "Pyramid", suggesting that he might be left-handed.