The latest book in Nalini Singh's Psy-Changeling book, Shield of Winter, was released earlier this week, while Harry Dresden returned in Skin Game, a new book in Jim Butcher's Dresden Files series.
With these two examples in double digits, there's a lot of history to recall, and because you're an avid reader, you've read many books since you read the prior book in the series. How do you prepare to read the latest entry in a long-running series? Do you jump right in? Or reread the previous books? Or find a wiki type of primer to remind you of what you might have forgotten?
How do you read the next book in a series after a hiatus?