A common trope in fiction pits siblings against one another in some form; maybe they're vying for the attention of a parent, maybe they're both in a similar job and struggling for success or control of a company ...
But alas, the story of Lin Enger and his brother, novelist Leif Enger, is nowhere near that dramatic.
The brothers, who actually wrote a mystery series together in the '90s as L.L. Enger, don't collaborate in that way anymore, but Lin Enger says not only is it still very comfortable, he's very aware of Leif as an audience and he says it makes him a better writer.