Children of Fog are very good at keeping secrets, so good that quite often, people don't know they're keeping any. (+1 bonus to Manipulation rolls in such circumstances.)
They are also quite good at ferreting out other people's secrets, and hidden information of all kinds, in particular the obscure and the magical; they're better at it if they're prepared for it to take some time. (+1 to seeking/exploring/enigmas type rolls, +2 if they're willing to be methodical/slow about it.)
One pack member at a time may use the Gift: Curse of Aeolus, but only if they are helping to hide or conceal something, be it an action or a physical thing.
Once per moon cycle, each pack member may spread a thick coat of silence in amongst a naturally or Gift-produced fog; all sounds are absorbed for an hour, or until the pack member speaks. (As per Rite of Silence.)