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3.5 rounded up because it is a devourable book. Two couples and a child go on a trip to Rome, then Sicily. Tangled histories and alliances get in a further snarl. The POV rotates among the four adults, and Ephron does a good job with the plot, dropping breadcrumbs in a string, then pulling them tight, like a necklace. For a while, it had an "anything goes" feel, and I had no idea what would happen. Then, the strings get pulled tighter and the things that happen feel inevitable. All four adults and the child are flawed and unlikeable, so don't go looking for friends in this text. But watching these flawed damaged characters bump up against one another, sometimes literally, was a romp.