Q: What organs belong to more than one system?

A: Depends. For some, it's the spleen, or the stomach, occasionally the brain.

In your case, it's the liver.

You share a liver, you and your brother. That's what makes you conjoined twins. That's why everyone throws rocks at you, and why they chase you with fire, and why they hide their children when you pass.

Can you really blame them? Have you ever looked at yourself?

You have? Oh. I see. That explains the despair etched on your face. I see that now.

It must be rough being a conjoined twin. I can understand why you'd want to put an end to it.

But, I believe your plan has some flaws. A flaw. One glaring, insurmountable flaw. That liver. That damn liver.

If I kill your brother, you would die, too. That's how it works.

Trust me, I looked it up.

As a professional hitman, I hate to say this, but I feel I have no choice: I cannot kill the person you hired me to kill. Not if you want to live. And you've made it clear that you do.

I'm going to return your money, minus the non-refundable deposit.

It's been a pleasure working with you. Maybe we'll get a chance to work together some time.

That time is right now.

I've accepted a very lucrative offer from your conjoined twin. He feels rather betrayed by your plans to kill him and wants vengeance, no matter the cost, no matter what happens to him.

Here's a bit of advice: The next time you want to hire a professional to murder your conjoined twin, consider whispering. He's right there.