The Missing Witness: A Quinn & Costa Novel

Allison Brennan

Jan 2024 · A Quinn & Costa Thriller Book 5 · Sold by Harlequin

About this ebook

"This latest installment will likely satisfy Quinn and Costa’s loyal followers and attract those curious about the interplay between public policy, law enforcement, and politics." —Booklist

When a key witness goes missing, Quinn & Costa must find her before a killer silences her for good…

Detective Kara Quinn is back in Los Angeles to testify against a notorious human trafficker, finally moving past the case that upended her life. But when the accused is shot in broad daylight, the chaotic scene of the crime turns up few reliable bystanders. And one witness—a whistleblower who might be the key to everything—has disappeared.

After another person close to the case is killed, it’s clear that anyone who knows too much is in danger, and tracking down the witness becomes a matter of life-and-death. But as explosive secrets surface within the LAPD and FBI, Kara questions everything she thought she knew about the case, her colleagues and the life she left behind months ago.

Now with FBI special agent Matt Costa’s help, she must race to find the missing witness and get to the bottom of the avalanche of conspiracies that has rocked LA to its core…before it's too late.

A Quinn & Costa Thriller

Book 1: The Third to Die
Book 2: Tell No Lies
Book 3: The Wrong Victim
Book 4: Seven Girls Gone
Book 5: The Missing Witness

Ratings and reviews

With the murder of a DA and an FBI agent, the MRT has their hands full trying to follow the clues and find out who is responsible for the city’s corruption and the murders. This was a breathtakingly complex book, introducing new and relatable characters. I really liked getting to know FBI agent Sloan as well as computer geek Violet. Both were expertly crafted to fit into the story well and to add depth to a propulsive thriller. All opinions expressed are my own.

This is the one I’ve been waiting for for a long time. We finally get the story that brought Kara to the FBI and let me tell you this was a complicated puzzle that kept me guessing and on edge. This almost feels like the last book in this series and if it is that makes me sad. She had never needed anyone, until Matt. With Matt, she felt like she had someone standing for her: standing behind her in support, standing in front of her to protect, standing at her side to join her in the fight. I l

The plight of the homeless and a gigantic Los Angeles city hall fraud combine to create a suspenseful and tense novel. There are multiple agencies involved in uncovering the extent of the fraud, all vying for total control. Within departments are bad cops and FBI agents and it is a matrix of connections that confounds everyone. A definite thriller! I voluntarily read and reviewed an advanced copy of this book. All thoughts and opinions are my own.

About the author

ALLISON BRENNAN is the New York Times and USA TODAY bestselling author of over forty-five novels. She has been nominated for Best Paperback Original Thriller by International Thriller Writers and the Daphne du Maurier Award. A former consultant in the California State Legislature, Allison lives in Arizona with her husband, five kids and assorted pets.