Lethal Obsessions

A DCI Gerald Croft Thriller

Fiction - Thriller - Psychological
Kindle Edition
Reviewed on 08/24/2026
Buy on Amazon

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    Book Review

Reviewed by Anne-Marie Reynolds for Readers' Favorite

Lethal Obsessions by Sarah Stuart is a DCI Gerald Croft Thriller that pulls Croft into a series of disturbing cases triggered by the discovery of human bones at a worksite. A young woman is left traumatized by a rape no one will admit happened, a once‑peaceful home is torn apart by a stepmother and her volatile children, and an animal rescue center hides cruelty behind its doors. Each case is driven by obsession, and Croft must unravel them before the damage spreads. As Croft works to untangle these threads, he must determine whether the perpetrators can be stopped through the justice system or whether vigilante action will strike first.

Lethal Obsessions by Sarah Stuart is one of the darkest entries in the DCI Gerald Croft series, and it pushes every boundary the previous books set. The author layers multiple story lines with precision, each one driven by characters whose obsessions warp their judgment and escalate into brutality. The crimes are graphic, the psychological elements are intense, and the emotional fallout is heavy, especially in the storyline involving a rape denied by witnesses. As always, the author's strength lies in her ability to build tension through character rather than spectacle; every subplot feels lived‑in, messy, and painfully human. Croft himself continues to anchor the series, steady in the chaos but increasingly aware of how fragile justice can be when obsession takes hold. This is a gritty, unsettling thriller that digs deep into the darker corners of human behavior, perfect for readers who want a crime novel that refuses to soften its edges.

Tom Benson

In DCI Gerald Croft, the author has created a character with strengths and weaknesses that make him more credible as he tackles issues with greater tact and diplomacy than some fictional detectives. As he deals with a number of unexplained deaths, ably assisted by his team and their forensic support, the detective must decide whether a serial killer is responsible.

The discovery of a body part and its associated skeleton is bad enough, but when there are more recent homicides, it raises the question of whether a historic serial killer is returning to haunt the police and worry the public, or whether this is the work of one or more new perpetrators.

This is a gripping tale of anger, frustration, retribution, and police procedure.

John and Dianne

Another enjoyable read from this talented author. The fifth of Sarah Stuart's Police Procedural thrillrs we've bought asap on publication!

R Coulson

Wow, what a roller-coaster of emotions! Sarah Stuart has tackled some difficult issues in her latest DCI Croft crime thriller, Lethal Obsessions. A family torn apart by a rape that went unpunished, a man driven to murder by his awful stepfamily, a dog lover incensed by cruelty. Throughout the pages, the desire for justice and retribution grows to obsessional proportions as each killer succumbs to overwhelming anger. ‘’Vigilante justice has no place in a civilised society” but when the legal system fails victims, there are those who will take the law into their own hands. Believable plots and characters in a contemporary and wholly believable world. A great read. Recommended.

Lesley Hayes

Although part of a series, this DCI Croft novel works very well as a standalone. It begins with an event that later becomes a key element of the novel - the triggers that for some turn into the unstoppable momentum of obsession. A roller coaster ride of a book that takes the reader on a convoluted journey of discovery. Central to it is a rape victim’s suffering, unstintingly described, as the repercussions make radical waves in one particular family. The author paints believable portraits of her characters, and different aspects of obsession that can lead to murderous rage … and multiple murders. Cleverly plotted and a satisfying read for lovers of murder mysteries and police procedurals.

Callieanne

“There’s no place for vigilante action in a civilised society.”

An official quote from DCI Croft, but does he believe it? In Lethal Obsessions, Sarah Stuart questions the early release from prison of violent offenders, and blows the lid off the ongoing practise of dogfighting. A so-called sport I assumed ended long before the ban on fox hunting. Not a book politicians would enjoy perhaps, but a gripping, thought-provoking, thriller for the rest of us.