I do have a cat. She was scared of the possum and hid in the kitchen on high shelves. Still in the kitchen unsure that Paulie is really gone.

Crawl space, too short for me to move around in. 

I was having an issue with mice for a while.  I think I finally figured out where they were getting in - through the gap where the AC lines pass through the outside wall.  I bought some expanding foam that's specifically for pest control (guess it's got some kind of repellent in it) and filled it in solid.   So far so good.   What about outside? 

I thought he had a cat (or is it two?). 

Read this a while back and had to revisit it.  I sure hope Samantha and Holly’s adventures continue - they both seem to have enjoyed themselves too much to leave it where you did.  Maybe Holly could use Samantha’s help to fulfill a well-paying client’s fantasy of not being an only child for once?  Keep it up - the dynamic between these two is great.