McKinnon's new novel is Sister Dear.
At CrimeReads she tagged ten favorite psychological thrillers with sibling rivalry at the heart of them, including:
He Started It by Samantha DowningRead about the other entries on the list.
Downing’s stellar debut My Lovely Wife took the world by storm and in He Started It, sibling rivalry reaches new and downright despicable levels. Beth, Portia, and Eddie Morgan don’t see each other often and that’s a good thing, because when they do, bad. stuff. happens. Greed, lies and betrayal are all rolled into a crazy-ass road trip. Downing is one bold and fearless author, who doesn’t blink in the face of fictional mayhem.
--Marshal Zeringue