... (Ray's mother)Her dress hung badly on her body as if she had recently lost a lot of weight.
"Ray," she(Ray's mother) said in that whispery conspirator's voice that he had come to dread. "Ray, listen --"
He ducked his head and pretended to tuck in his shirt. ...
I think the use of first 'that' is like 'such': she said in such whispery conspirator's voice that he had come to dread.
So, I'm wondering if the form of "that...that" is common to replace "such...that". How should we understand it correctly here?
Excerpted from the book - "The Long Walk"