I had my own run in with a deadly spider yesterday,
My washing machine was acting weird (taking forever to fill for the wash) so I checked it and it was dumping water from the back straight onto my floor (hose had busted) and to make sure I wasn't just pumping gallons of water into the basement I went out to check our gauge.
Lifted the lid and looked down, didn't see any movement from it, but did catch something out of the corner of my eye, looked at the lid... and a black widow the size of the palm of my hand was in the lid. I kind of went into a white noise place because the next thing I really remember I was heading back to the house. Apparently I had gotten the lid closed.
Gah! I never want to see a black widow that big again.