What would you do?

There was this guy who took your best friend hostage and you know exactly who he is and if you successfully denunciar him to Person A he will definitely be stopped. If you dont denunciar him, your best friend will be tortured and then killed.

Although the catch is that this guy seems to be able to have an eye on you where he knows everything you are doing and saying 75% of the time. If he notices you doing anything funny like reporting him, he will not only kill your best friend, but you and several innocent people.

Would you take the risk of reporting him?

And dont give me the flaws in this. Theoretically speaking that there are no loopholes to this or anything. *wrote this late at night when I was getting ready for bed*