Just about every week, I utter the phrase "I think this is the worst one yet" and the following week, I am proven wrong.
If this most recent episode didn't convince you this is a MENTAL ILLNESS, then nothing will. No one in their right mind - outside of the slums of places like Brazil and India - live with raw sewage running through their homes. Yes, running! The "fluid" from the septic tank was actually on the move through the downstairs.
I think the sister was right. Bulldozers!