How far would you go to feel loved and powerful? Beth Soames, a white, working-class Brit, feels like a lifelong loser at 18, already worn down from coping with her dysfunctional family and a lifetime of microaggressions from a world with little tolerance for “fugly” (fat and ugly) women—as Beth identifies herself. Fettered by social anxiety, Beth hesitantly befriends Amy, a beautiful, outgoing university student; at the same time, she daily spends hours online trolling conventionally attractive women on Instagram to punish them for their supposed vanity and contempt for people like her. As Beth’s Internet sweetheart, Tori, urges her to new heights of virtual villainy, Beth is initially exhilarated but subsequently horrified by the real-life fallout from her malicious actions. As Beth tries to cut ties with Tori, Tori’s growing malevolence threatens Beth’s family and her new friends, forcing Beth to overcome her fears to protect those she loves. Overall, the book sends a fat-positive message, and Waller convincingly depicts Internet hazards such as catfishing and hacking; readers will come away with valuable information about online safety. For all her flaws and cynicism, Beth is a sympathetic and relatable protagonist. Waller’s use of intimate, first-person narration occasionally falters, such as when the author contrives to hide Beth’s knowledge from the reader for the sake of a later twist, creating scenes where perplexity undermines suspense. Similarly, Beth demonstrates consistent attraction to women rather than to men, apparently without realizing it—the story implies a journey from denial to acceptance of her sexuality but does not clearly engage this issue from Beth’s perspective, potentially leaving readers confused. While gripping, this book suffers from relentless negativity. Few pleasant scenes occur before the end, and most of those emanate a sense of dread. Despite its flaws, an entertaining and worthwhile read.