How do you tell if someone is being held hostage over phone?

There are few ways to tell if someone is being held hostage over the phone. If they are slow talking and choose their words very carefully, that is because the guy is probably holding a gun to their head. Also if they start to cough or gasp if they something a little strange. The guy might have strangled them for giving you a hint. One easy way to know if they're in need of your help is if they say something you for a fact would know is false. Like, "You'll have to remind your brother Josh that we need to see the movies together," when you don't have a brother named Josh. This is a sign that you need to be alert and try to trace the number to help the person out. Hope this helps.