A few minutes ago, they only had one Batman to deal with.

Now, standing in front of the Winged Knight and the Batgirl are two bat monsters, a man and a woman.

Francine swelled up in front of them, his furry wings tearing through his coat and torn his swollen torso into strips of cloth. Her scarlet eyes were the same, a low hiss from the depths of her throat, and her fangs clinging to the viscous liquid looked sharper and deadlier than the male's.

"Oh God...... Barbara said in a lost voice, "she'...... How...... What do we do now? ”

Roy took her hand and stepped aside, and said lightly, "Do nothing." ”

Before she could ask, Barbara could see the problem. The batman, who was supposed to have been injected with serum by Roy to return to normal, looked even more ferocious than he had just been. He glared angrily, not at the winged knights and batgirls in the shadows beside him, but at his kind, his wife, across from him.

The two bats each let out a terrible cry, and then they both rushed forward, fighting each other with their sharp claws and teeth. Roy and Barbara became spectators, and nothing seemed to be their business.

"I don't understand, it's ......" Barbara wondered.

Roy said, "Kirk? Dr. Longstrom didn't get out of control, and his addiction to serum didn't recur. ”

Barbara wondered, "Then why ......?" ”

Roy went on to explain: "It's Francine. Dr. Longström shut down the Batman Serum project, which made it difficult for Ms. Francine, a commercial spy, because if she couldn't steal anything from the doctor, her boss at the Cardwell Enterprise would undoubtedly debunk the fact that she was a spy, so she needed to continue researching. She modified the formula of the Batman serum and used herself as an experiment, and became addicted. Remember the bodies we found under the Brooklyn Bridge? Did I say that the deceased was supposed to be killed by a blood-sucking silver-haired bat similar to South America? While we were fighting Dr. Kirk, I noticed that his fangs did not match the wounds on the deceased's body. ”

"So you're going to conclude that his wife is the real murderer?"

"Kirk didn't use bloodthirsty** bloodthirsty silver-haired bats as a sample of the serum, but his wife chose to do so." "When I was at Cardwell Corporation, I noticed in the lab that she had compiled a detailed description of vampire silver-haired bats. If her purpose was really just to stop her husband, she should have researched the bat species used in Dr. Kirk's serum. So not only was she in the lab making an antidote to turn Dr. Kirk back to his original form, but she was also researching her own Batman serum recipe there. ”

"Remember when we found Ms. Francine in the lab? I noticed that she blinked frequently, her eyes wandered, and she lost a lot of weight compared to the photos of her when she was traveling on the USB stick, which are typical symptoms of drug addiction. So, combined with my previous findings, I have reason to guess that Ms. Francine is the one who is addicted to the Batman serum. ”

"Okay, okay," Barbara rubbed her head as she looked at the two bats in front of her, "I still don't understand a lot...... Like, why did the two of them fight? And how did you know they were going to fight? And wasn't the serum you just injected with a reversal of change? Why hasn't Dr. Kirk changed back? ”

Roy continued: "The marks we found in the messy laboratory at Naho Bridge, if you look closely at the scratches, you will see that there are two scratches of different sizes, similar but not exactly the same size, so I can tell that there were two batamonsters in it at the scene, and that the amount of damage was undoubtedly caused by the battle between them. ”

Barbara suddenly: "You mean ......"

Roy nodded: "Dr. Longstrom discovered his wife's addiction to the Batman serum, and even showed signs of uncontrolled killing, and decided to stop his wife personally." So he reconfigured the serum that he had long since given up researching, and personally incarnated as a batman to track down his wife, and fought against it. However, as a result, he himself couldn't control his mind and lost his consciousness because of the hidden dangers left by taking too much serum before, and we had the scene we encountered under the Brooklyn Bridge earlier. I was convinced, however, that as long as they were monitoring each other's scents or hormones, they would develop strong hostility towards each other, so Ms. Francine made a serum that reversed the changes of the Batman while she was awake and tried to use it for her husband, in order to solve the obstacle that was trying to stop her once and for all, and she even tried to use our help to help her do so. So, I just injected Dr. Kirk with hormones that boost the production of male hormones and hormones to lure them into killing each other. ”

With that, Roy pulled out another syringe with the red liquid that Francine had given him in the lab. There is no doubt that this is the real antidote.

"Now, we just have to wait for two beasts that have lost their minds to kill each other until they are out of strength." Roy said calmly, "Then give each of them a needle." ”

The two beasts killed each other in the dark, biting and screaming at each other, trying with all their might to tear each other to pieces. Twenty minutes later, the blood of the two bats was already spilled all over the ground, and their bodies were covered in paint, and they were obviously a little weak compared to their initial ferocity.

Roy spread half of the antidote from the syringe into another syringe and handed it to Barbara, saying, "Almost." I'll deal with the male, and you will deal with the female. ”

With that, he rushed forward, lying on the back of Dr. Kirk's transformed Batman from behind, and stabbed it with a needle. Batgirl did the same, giving Francine a shot to the batalike.

The effect soon appeared, and the two bats held their heads in quick succession and howled in pain, and finally separated, shrunk and returned to normal, but both had fallen to the ground unconscious.

Batgirl unfastened her cloak and covered the naked Francine and asked, "What now?" ”

"Now." "Surrender Ms. Francine to the police, Dr. Longstrom will have to wait." We also need him to help us come up with an antidote to the serum formula used by Emperor Penguins. ”