Edge, the fourth installment in the Harriet Foster series, doesn’t ease you into the story. It throws you right into the action of a mysterious new drug that is leaving bodies behind with no explanation, few leads and time running out. Non discriminant with its victims with the only thing tying them together, its name, Harriet Foster and her team find themselves at the heart of a case that hits too close to home.

Not only chasing a drug that seems to be a silent killer, but Detective Harriet Foster is also battling the fallout from her last case and the quiet doubts surrounding her career. When the investigation turns personal and hits close to home, the stakes get higher, and the story goes from your typical investigation to something more intimate and unsettling.

The book balances the external race against time with Harri’s internal reckoning. Her determination is fueled not just by duty but by empathy. The case is constant but so is her fear of failing again, not being able to come back from the edge herself. That dual tension progresses the book temperature with a sense of urgency. The toll of this case leaves you asking the question whether Harri can survive it.

This is a crime thriller that is emotionally charged and equally elevates the characters and plot. The danger is real, and we feel it on every page. As the threat gets closer to someone and the tension tightens, it becomes unbearable which makes this not one you want to put down. It examines the cost of addiction, the domino effect of crime and the emotional toll carried by those who try to stop it. If you are a fan of high-stake investigations and stories that blur the line between professional obligation and personal cost, this is one worth diving into. Not just this book but back read the previous to enjoy a wonderful series with an exceptional female protagonist.

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