A 'don't overthink it' adrenaline rush, Look in the Mirror is overall extremely readable and addictive, but doesn't have much substance to propel it as a new favorite thriller. The book's synopsis and marketing does a great job disguising the actual plot (which doesn't reveal itself until about the halfway point), so I would recommend steer away from reviews as some will likely inadvertently spoil it by comparing to movie/book with similar elements.

Overall I feel the same about Look in the Mirror to Catherine Steadman's previous title The Family Game, in that she always hooks you right in with a great setup, but the narrative tends to lose grip on logic and plausibility as the plot goes on. A decent popcorn thriller, but look elsewhere if you want something more grounded and nuanced.