The Last Detective by Brian Cohn


Score: 5/5

Genre: Mystery + Aliens


It’s been two years since the invasion.

Two years since the slicks came to our planet and herded humanity together like cattle, placing us under constant watch in the few cities that remain. The lucky ones are left to their own devices. The unlucky few are rounded up and carted off to labor camps to face an unknown fate.

Former homicide detective Adrian Grace was cut off from his family, but has somehow managed to survive. When one of the slicks is murdered, they ask him to find the killer. He reluctantly agrees, and in the course of his investigation witnesses the best, and the worst, that humanity has to offer: a plot to escape the labor camps; a pending war between an in-your-face councilwoman and the corrupt city mayor; and a priest who claims to have befriended the dead alien. But worst of all, he stumbles onto a conspiracy that puts the fate of the entire city in jeopardy. In the end, Detective Grace discovers that the killer might just be the last person he would have suspected.

A story about betrayal, redemption, faith, fear, and hope, The Last Detective is a thrilling look at what happens to humanity when our world crumbles around us.


The book mashes together classic detective style attitude from the sixties with an occupation by aliens. Both topics on their own can be interesting, but together I found it outright riveting. The aliens focus purely on betterment of their races, everything for the greater good, individuals mean nothing. This made an interesting dynamic but also left a lot of questions regarding the larger picture unanswered.

Generalizing the plot is difficult without giving spoilers. The blurb shown for this work outlines nearly everything a reader may need to know going in. Those expecting a high-powered laser gun fight because aliens, should be aware this is a lower powered situation. There is action that fits well with a noir theme; despite aliens. The story focuses only on one murder mystery and leaves the ‘fight for freedom’ unresolved. These issues did not detract from the story being told but instead gave it more focus upon the crime being solved.

Readers may not like present tense. Otherwise I found the writing very easy to follow, to the point that I stopped noticing the writing style. The characters were gruff, realistic, and provided snark or sass in equal measure. Their conversations were fun and didn’t feel out of place. I really dug how the inner process of elimination that law enforcement goes through was explained.

The best way to get an impression of this book is to simply check out the sample provided and make a choice. I believe many people will find it a wonderfully entertaining read – especially those interested in murder mysteries.

Available on Amazon

Goodreads Page

You can also connect with Brian Cohn here:

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