Okay, this is how it breaks down: the detectives, the victim, plot, and all the obscure references to the people you've never heard of-mine; regular characters, the city, and all that other crap-not mine. All that crap belongs to the company...or something like that. So, let's get going.

The look of astonishment was priceless. She stood like a deer in the headlights. "Lieutenant Hawkeye, would you please come with us?" Garza asked, opening the door to her cell. He led her back to the small room where he usually stood in the corner. Conroy was left outside this time. It was his turn for the questions. They sat down, and for a moment, they sat looking each other in the eye.
"What makes you think I've done anything?" He grinned as she slowly cracked.
"Where were you at 10:45 the night of June 4?"
"I was in my apartment." Anyone else would have been annoyed at having to answer the same question over and over. Not this one, though.
"And what were you doing in your apartment?" Ah, a new question. It caught her off guard, but she covered it well.
She paused. "Sleeping."
"You're lying."
"Now, why would I do that?"
"That is a good question. Why indeed? I think I may have another good question for you. Why would you lie about seeing Arika at the fight on the third?"
"What? What are you--" she started, but he wouldn't let her finish.
"The third, near the end of your shift. You said you saw her when the colonel introduced you, then you didn't see her or hear about her until we brought you in. Now, you don't strike me as the type of person who would forget anything, let alone watching your boss get his ass kicked by a girl half his size. Which, of course, leads me to believe that you lied to us."
"And why do you think I would do that?" she asked coolly.
Or, at least, she was trying to act cool, but he could see her slowly crumbling. "I think it may have something to do with a guilty conscience." For a moment, he thought she was glaring at him. "Why don't you just tell me what happened? We have enough evidence to put you away either way."
"What do you have?"
"We have a witness." He watched her fall apart then and there.
"You—you're bluffing."
"Oh, I am, am I?"
She stared blankly for a moment, then conceded. "What did you want to know?"
"What happened at the fight?"
She started, and there would be no stopping her now. "It wasn't any one thing, but…it was the way he acted around her. He was just so…I don't know how to say it. He loved her. It became obvious that he loved her."
"And this bothered you?"
"You can't possibly—"
"You love him, don't you?"
"Wh-what?"
"Do you love him?"
"What—"
He wasn't really letting her finish, but he was okay with that. "That isn't important. So, you saw them outside your window that night, and you just decided to kill her?"
"They had been in that alley so many times. They walked past my window so many times, it was infuriating. So, that night, I guess I snapped. They were just so…it sickened me."
He snapped off the recorder. "Thank you, I have everything I need now." He led her back to holding. "Now," he said, facing the three of them, "as I was saying. We've solved the case."
Mustang glared at him. "Who did it?" he asked fiercely. "Who killed Arika?"
Garza looked up at the ceiling. He didn't want to give it away. "Should I tell him or would you like to do it yourself?" he asked the ceiling. He looked down and surveyed the three of them. Mustang was glaring, Foust was clueless, and Hawkeye couldn't meet Mustang's eyes. She didn't have the courage to tell him. He was about to begin the explanation when she surprised him.
"I did it," she said, looking at Mustang defiantly. "It was me, Roy."
He stared at her for a moment, uncomprehendingly. "You…but, why?"
She took a deep breath, closed her eyes, and took the plunge. "I hated her. You loved her and I couldn't stand it." She opened her eyes and smiled. A weight had been lifted and she obviously felt better.
Mustang, on the other hand, was angry. "You're smiling! How could you? Aren't you even sorry?"
She looked at him in astonishment. "Now that you mention it, no, I'm not. I've killed too many people for any one to be regretted, I guess."
He glared at her for a moment, then turned his back on her. Garza took that as his cue. He opened the cells holding Foust and Mustang. On his way out, Foust turned. "What will happen t her?"
"She'll be put to trial, then probably serve a prison sentence," Conroy told him.
Garza stopped before leaving the holding cell. Something didn't add up. She was grinning. It was small and he'd almost missed it, but she was grinning. He walked back. "Odd, murder convicts don't usually smile." She looked up angrily. Thinking back it seemed too perfect. She had led up to it, then broken at a crucial moment. Just too perfect. "Did you really do it?"
"I confessed, didn't I?"
"That doesn't mean anything."
"Yes, I did it!" she shouted.
"Why?"
She looked him square in the eye. "Do you really want to know?"
"Yes, I do."
several years earlier
An old man stood in front of a small girl. "Young Riza, you have defeated all my students. All but one. Defeat that one student, and you shall enter the ranks of the elite military warriors with my blessing."
The young girl bowed. "Thank you, Mr. Armstrong. I am ready."
A younger Arika Ree walked into the room.
"You may begin," Armstrong said, stepping back.
present
"She beat me, and I never recovered. I was shamed, humiliated, and I entered the military as a base ensign."
"And you've blamed her all these years." Suddenly it fell into place. That was why she hadn't mentioned the fight. She had used love as a façade for her shame. She had killed the girl, and that was all that was important to everyone else, but now he knew why, and he would be able to sleep tonight.
several hours later
A shadow fell over the sleeping form of a sleeping woman in a holding cell.

That's it for this episode, tune in for more!