If nothing else was disturbed then you can be pretty sure it was someone who knew where the cash was, but that doesn't mean a "normal" burglar would not have found it.
People who rob homes professionally will find your valuables, places you think are safe probably aren't.
It's still just a show, but Discovery Channel :: It Takes a Thief
Your hiding places will fool casual thieves, but not someone who's job is to find your shit. It's like cloaking a web page, normal visitors won't notice, but there are people on this forum that would spot it easy.
People who rob homes professionally will find your valuables, places you think are safe probably aren't.
It's still just a show, but Discovery Channel :: It Takes a Thief
Your hiding places will fool casual thieves, but not someone who's job is to find your shit. It's like cloaking a web page, normal visitors won't notice, but there are people on this forum that would spot it easy.