Clinton, a resident of Chappaqua, N.Y., will head north as part of her book tour to sign copies at Costco at 200 Federal Road, Brookfield, at noon on Saturday, Sept. 16.
The appearance is listed on her book's official website, although it does not appear on the list of events on the Costco website.
The book will be published on Sept. 12 by Simon & Schuster. The list price is $30, although it can be preordered at a discount at Amazon.com and Barnes&Noble.com.
"What Happened" is about Clinton's loss to Donald Trump in last year's presidential election.
“In the past, for reasons I try to explain, I’ve often felt I had to be careful in public, like I was up on a wire without a net. Now I’m letting my guard down," said Clinton, who previously served as senator and secretary of state.
The book will discuss what it was like to face Trump, Russian interference and Clinton's experiences as the first woman nominated to run for president by a major party.
Simon & Schuster is calling it "her most personal memoir yet." Clinton had previously written the memoirs "Living History," and "Hard Choices."
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