overwhelmed by the arrival of ...

[mohsen.amiri]

Hello
I can not comprehend the meaning of last sentence here:

'He refuses to drive the family car, is a regular reader of unsolved mysteries and is somewhat sexless and desiccated, totally overwhelmed by the arrival of the 'bad blood' of the family.'

Reference: the book 'Dark Side of Genius' by Donald Spoto

 

[bennymix]

It sounds like the 'bad blood' is a person, who's thought to be low or unworthy or evil. My guess.