Author's note. Hey! I have wanted to do a Rizzoli and Isles fiction for a little while now, and was feeling inspired, so here we are. I own nothing, and am just a huge fan of the show! Please read, review and enjoy!

"That was Dr. Isles, she says she's got something," Frost said as he hung up the phone. Everyone had been working on this case for weeks now, and had gotten nowhere, and secretly, they were all waiting for Maura to figure something out that saved the day. Maybe today was that day.

"Thank God," Jane said as she picked up her jacket. "Hopefully Maura's got something that will lead to us being able to arrest this prick that killed Maggie Hart."

The two of them got into the elevator and made their way down to the morgue. They saw Maura with her goggles on, examining the body once more with all of her tools. Jane always loved watching Maura work, and she especially loved her in that white coat.

"Please tell me you have something," Jane said in a very exasperated tone.

"Why hello detectives! How are you on this very lovely afternoon."

"Maura, can it, please. If we go on to one more dead end in this case, I'm going to lose my mind, now please tell me what you've got."

"Well, I was going over Ms. Hart one more time, and as I was trying to figure out just what happened to her, I found tiny specs of Keratin, enamel and Cementum underneath both her fingernails and toenails."

"Maura, please, in english!" Jane scolded.

"Fine, Jane, if I must. Enamel and Cementum are two of the tissues that make up teeth, and after I found these tiny traces, I ran them. Cementum is found close to the root, and by the gums. These two itsy-bitsy particles aren't Maggie's but they come from a male"

"Maura, that doesn't really help us, well already knew the killer was male, based on the wound pattern, which you already told us," Jane said.

"Yes, I know but DNA doesn't lie. I ran it, and found out that it belongs to Derek Brothers, whom you spoke to, right?"

"Yes, that's Maggie's ex, and the current boyfriend of her roommate. Holy shit."

"But Jane, and Frost, I still had to run the Keratin - which is the protein that finger and toenails are made out of, and I found out that belongs to a woman. It was hard to sort out, because she has her own cells from her own keratin and epidermis under her fingernails, but I sorted it all out, and ran it, and found out that the female keratin belongs to Eileen Woodley, and isn't she Maggie's roommate and the current girlfriend of Brothers?"

"Yes, she is," Frost chimed in. "But do we have motive? Why would either of them want Maggie dead."

"Well both of them were jealous of Maggie," Jane said. "And it was clear when I talked to her that Derek was never over Maggie, but Maggie clearly didn't want him. Maybe if he couldn't have her, no one could?"

"If I may," Maura interjected.

"Yes Maura, but make it quick. We have people to arrest here,"

"OK Jane. So, I was a little confused when I found the keratin particles from Woodley. But I examined them further and saw that even though they were small, they had been cut perfectly. Derek cut them and put them underneath Maggie's fingernails to frame his current girlfriend. He then cut her once with an exacto knife, which we previously found, and then broke her clavicle and scapula with the bat you guys found, but she died when due to exsanguination of her inferior ulnar collateral artery."

"What? Maura, I swear you say all this fancy stuff just to annoy me. Please speak in english."

"Brothers broke Maggie's shoulder, they struggled, and then…"

"Oh, she bled out," Jane chimed. "Why couldn't you say it that way before. You know, the way normal people would understand it?"

"What's the fun in that?" Maura replied. "As they struggled, we see that Maggie got one really good shot at all, and chipped his teeth, which ended up under her fingernails as they fought. He figured the chips were so small that no one would find them."

"Oh, OK, I understand all of this now, but his DNA is already on Maggie. Did he really think a lab wouldn't find that?" Frost said.

"Well, I never said he was a brain surgeon," Maura joked.

"And he has money to fix his teeth, which I'm sure he did. We'll pull his dental records right now. Frost, come on, let's go. And Maura, thank god. We'll pay Brothers a visit now, and hopefully put an end to this mess. Once again, you really came through for us."

"Well, it's what I do."

And with that, the two of them were off.