Half Alien

“The second part of your mission is to locate the three children, now adults of course, who were born to the survivors from the East.  To repeat what I said before, you will recognise them but they will not recognise you.  This gives you a great advantage.  Once you have traced these three you will need to monitor their movements.  Now it may be that they have already found the ship, in which case it will make the first part of your task easier.  From the time that you locate them, and it is almost certain they will have joined forces, the decision as to how to treat them will of necessity be yours.  You must use any means you can to prevent them from opening the matter transmitter, for if they do your world is doomed.”