Question about spies

[Forward Observer]

It's not a big deal, and it doesn't seem to happen all the time, but after sneaking into a settlement, why does my spy occasionally exit on his own? Is there a limit on how long a spy can hang around, or is it different for a castle versus a city?

[Flavius Merobaudes]

To me it seems more like he is thrown out of the settlement. I always thought he has been discovered but managed to escape.
Probably there is a trigger for being discovered every turn your spy's in there, because in my games the time until being discovered is very different. But that's just what I think.

There's an other strange thing: When you want to infiltrate settlement with a really good spy, it say chances for success are 100%. But he is still killed in some cases. Happened to me yesterday when trying to spread the plague. I guess CA don't like biological warfare.

[Zarky]

The spy dying with 100% changes is weird indeed, happened to me twice, but it was when i was already in settlement, trying to spy it again to gain skill, quess it shows 100% if you´re still inside settlement, even if changes are lower?

[Didz]

I assumed that this was just the games mechanism for making a resident spy test his personal security against the cities counter-intelligence network.

So, he periodically gets thrown-out of the city and made to retest his ability to sneak back in.

[madalchemist]

Maybe spies die with 100% chances because AI doesn't always take in consideration the existence of a counterspy in the city, who lowers your chances to spy/assassinate/sabotage but seldom doesn't display it in the percentage ratio you read.

I've seen more than one assassin in the same turn failing an easy city kill (each 85%+) or dying for failing sabotage while my spies noticed 1-2 enemy counterspies within the target city (counterspies with 15-20% chance to be killed by the above assassins) where they "worked".

Maybe it's just the showed pergentage who is bugged.

[WhiskeyGhost]

speaking of which, is it just me, or do some of the cities around the HRE-Poland area have some sort of permanent low success rate for spies? I've checked for enemy agents and none appear present, but even my maxed out skill spy only gets a 7% chance to get in?