Creepy home owners that lurk in basements

Our realtor took us on a house-hunting blitz this evening. We viewed 10 homes, well 9 1/2 actually.
You see, one of the homes we're looking at is a foreclosure sale and because of this, the owner isn't too cooperative with showings. We roll in, our realtor rings the doorbell three times, walks inside, calls out several times "Hellooo! Anybody home?"
No answer.
I venture in, my wife stays put in the car afraid that maybe the owner is home. I walk in, slowly, and have a quick look at the main floor.
It is GORGEOUS.
As I signal for her to come in for a peek, a voice from the basement calls out, "Who's there?"
I turn around and make a beeline for the door while our realtor explains the situation. The guy - draped in a housecoat (it's 6 p.m.) backs our poor realtor out the door.
Showings between noon and 4 p.m. only, he says.
We reallly need to get to see the rest of this place because it is a beautiful place in a beautiful area with a backyard that backs into a large wooded area. And, seeing that it's a foreclosure, we may be able to purchase it at a great price.
We ended up seeing one other place that looks promising and the rest, we've crossed off our list. One home looked kind of cool from the outside but the tenant was keeping a chinchilla. It was messy, it stunk and we left feeling like we needed a shower.
On the whole, we've found that trying to find a home is discouraging, disheartening, depressing and - thanks to the "man in the blue house coat" - just a little bit scary.

Maybe we should stick to renting...