The "Murder of Mia Fey" is a pivotal event in the video game series *Ace Attorney*. Mia Fey, a defense attorney, is found dead in her office, leading to a complex investigation. Her sister, Maya Fey, becomes a key suspect in the case, prompting her friend, Phoenix Wright, to defend her. The murder occurs on the night of a crucial trial, and Mia's death significantly impacts the storyline. As Phoenix Wright investigates, he uncovers various clues and testimonies that reveal the truth behind Mia's murder, ultimately leading to the identification of the real culprit.