PositiveIrish Independent (IRE)The scope is so wide-ranging that at times the reader can wonder how everything is linked, but Klein always keeps a grip of the common threads even as she sways off the path a little ... The result is like your smartest friend guiding you through a rather knotty personal conundrum that just happens to involve the most pressing issues of our age ... While it’s not an easy read in terms of the topics it explores, and can at times feel a little too wide-ranging, Doppelganger is an often frightening capturing of the strange times we live in.