A Quinn & Costa Thriller

A notorious serial killer is back An edgy female police detective. An ambitious FBI special agent. Together they are at the heart of the ticking-clock investigation into a psychopathic murderer. The bond they forge in this crucible sets the stage for high-stakes suspense. Detective Kara Quinn is...

Something mysterious is killing the wildlife in the mountains just south of Tucson. When a college intern turned activist sets out to collect her own evidence, she, too, ends up dead. Local law enforcement is slow to get involved. That’s when the mobile FBI unit goes undercover to infiltrate the town and its copper refinery in search of possible leads.

From New York Times bestselling author Allison Brennan comes a gripping new thriller. A lethal attack with no clear motive…and a killer dead-set on keeping the truth buried. A bomb explodes on a sunset charter cruise out of Friday Harbor at the height of tourist season and kills everyone on...

“Set among Louisiana’s swamps and brooding atmosphere, 'Seven Girls Gone' is a complex mystery whose characters are as intriguing as the storyline.” —The Denver Post When nobody will talk and corruption runs deep, turning to outsiders is the only way to make sure women stop...

"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…...

No matter how far you run, some pasts never let you go… Two people were murdered—at the exact same time, in the same gruesome manner, bodies covered in the same red poppies…but on opposite sides of the country. With Detective Kara Quinn investigating in Oregon and Special Agent Matt Costa...

Three newlywed couples have disappeared from an exclusive resort in Florida, only to turn up dead soon after. With the location and the similarities between the female victims as their only leads, it’s up to the FBI Mobile Response Team to catch a serial killer before anyone else ends up dead. And they have the perfect bait—Detective Kara Quinn, who bears an uncanny resemblance to the targeted women. Undercover as newlyweds pretending to enjoy their honeymoon, Kara and FBI Agent Matt Costa set a flawless trap.