Dominica Magdziak

was an FBI agent assigned to the Behavioral Analysis Unit. She had been the "new kid" at the BAU until Daphne Worth joined.

On Victor Celentano's orders, she and Agent Hastings took custody of Hope Mitchell away from the ACTF following Mitchell's capture in episode 2x06 "Cuckoo". She was killed when Mitchell escaped, although we don't know if Mitchell killed her directly or if she died in the ambulance crash.