Mack, Catherine: - CATHERINE MACK (she/her) is the pseudonym for the USA Today and Globe & Mail bestselling author Catherine McKenzie. Her books are approaching two million copies sold worldwide and have been translated into multiple languages. Television rights to Every Time I Go on Vacation, Someone Dies and its sequels sold in a major auction to Fox TV for development into a series. A dual Canadian and US citizen, she splits her time between Canada and various warmer locations in the United States.