The trouble with spy agencies is that they'll only tell you what they want you to hear. By their very nature they're secret squirrels, amassing info with a view - we're told - of keeping us safe.
They also have the ability of scaring the living daylights out of us, which is what they did when the boss of the Security Intelligence Service, Rebecca Kitteridge, appeared before our politicians late last year.
Kitteridge told us there has been a rise in the number of Kiwi women leaving the country to become jihadi brides - which we all found difficult to fathom. Why would young women leave the safety of this beautiful country to live in the hellholes of Syria and Iraq? What's more, what would incense them to get hitched to the savages that are marauding around those hapless countries in the name of Islam?
Of course all the usual questions were asked but not answered, like how many had snuck out of the country and where were they living?
After talking to the politicians, Kitteridge told us the numbers of young women leaving from New Zealand was small but significant and refused to give further details.