Very little is known about Carcani's early years, other than he was born in Albania on February 6, 1973, where he was also raised, and was a domineering, narcissistic sociopath. He later became a member of RENEA, the country's special forces. In 2008, during his time at the job, he met and worked with Colin Bramwell, a sniper for the special forces in South Africa. Settling into the U.S. for his education when he was 23, Carcani became the vice-president for a private quasi-military security firm called Black Cross Private Security Services. Years ago, he met and married a woman named Maya, whom he severely physically abused. Finally, six weeks prior to "Final Shot", Maya left Carcani with the help of an organization aiding battered women, without his own knowledge. Enraged upon finding out five weeks later, Carcani hired Bramwell to kill her while he was in Houston on a training seminar, so as to place suspicion off of him when Maya would turn up dead.
When Morgan and JJ go to his workplace to interrogate him in "Final Shot", suspecting him of committing Bramwell's killings, he has just returned from his business trip. Spotting the two agents as they talk with a secretary, Carcani, realizing they are onto him, instantly flees and pulls out a handgun, firing several shots at them as he runs. Running out onto a street, he is hit by an incoming bus, mortally wounding him. When Morgan demands Maya's location, he smiles tauntingly at him before dying. The BAU would later deduce that Bramwell is the killer and tracks him down, killing him before he can shoot Maya in her hotel room.
Since Carcani didn't kill anyone, the term "M.O." is misused. While he was married to Maya, he abused her physically. In order to avoid suspicion from police, Carcani hired Bramwell to carry out the killing of his ex-wife Maya. He later fired at Morgan and JJ with a semiautomatic pistol while attempting to escape.
No official profile of Carcani was made, since the BAU's profile of the sniper was mostly focused on Bramwell. However, the BAU briefly judged that he may have been a narcissistic sociopath due to his willingness to die because of his confidence that Bramwell would kill Maya.
- Unspecified dates: Maya Carcani (his ex-wife; physically abused only)
- October 9, 2013:
- Carcani's surname may have been an allusion to the Carcano rifle used by Lee Harvey Oswald to kill U.S. President John F. Kennedy, since both names sound and are spelled extremely similarly. It should be noted that Oswald was referenced several times in "Final Shot".
- According to his arrest records, Eric's Social Security number is 973-00-4561.