Really great story!
I have been following it, but not posting since as a Social Worker, I have worked with my share of addicts and just wanted to lurk a little more before commenting.
The characters, as mentioned, are right on (the supportive yet confrontive George, the nurturing Alice, the worried Perry -- and so, is the addictive personality you've given to Clark without making Clark not Clark (even Alt Clark) any more.
A very remarkable job.
Barb.
