For my story, I was wondering if this scenario is possible. Basically a gang wants to recruit a new member, so they give him a 'blood in', which means that in order to get in and be relied upon, you have to spill the blood of another person, so to speak. So the new recruit, not quite knowing what he is getting into, is overwhelmed at thought of having to do this, and has a moral qualm. I wanted to write it so that he calls the police to come to and stop the hostage from being harmed. But is it possible for him to do this without the gang noticing he made a call, since they would naturally be watching him? Also when the police are called, I don't want them to be able to identity who called them, so the character can remain a secret anonymous caller. Is this possible without the gang or the police coming off as stupid, or what do you think? I am not quite sure how police technology works, but if a call is made, if you can trace the call, you can identify the phone from what I know. What do you think?