First, I hired Joffrey and his friends. (There is also a bug where the tip shows you too low of a price when you hire a whole group of adventurers -- but that is reported in a seperate thread). For some reason two of those adventurer pals had zero combat strength.
Then, I took a Escort Noble Lady to the Estate quest.
Next, I tried to sneak through a swamp full of those monsters that look like alligators, the ones that have a variant called 'Coast(monster) leader' with about 80 combat strength. Because I thought they were non-aggro, the way they wander around, and didn't move toward me at first. By the way their Info card that you can access by left clicking on them has a little sad story about wolves -- probably not the right info for them.
Turns out that they did attack after all. One, killed adventurer Joffrey, but was defeated. Then a Coastmonster Leader attacked, and in the first wave killed the Sovereign. She teleported back to town. Afterwards, same turn, the same monster attacked in a second wave, against the group containing only the 2 zero strength champions, and the zero strength noble lady. -> Crash to desktop.