I'll read a series from start to end (be it published order or recommended reading order). I'll re-read it, if it has been some time since I last read a book of the series.
I sometimes break the series by reading another book in between (but that book is never part of another series).
"I followed you."
"Because you were moving. It's impossible to follow someone who is standing still. If I hadn't moved, I would have lost you. Thus, follow."
from: Edge of Destiny