Quinn & Costa Series by Allison Brennan

An edgy female police detective... An ambitious FBI special agent. Together they are at the heart of the ticking-clock investigation for a psychopathic serial killer. The bond they forge in this crucible sets the stage for high-stakes suspense.Detective Kara Quinn, on leave from the LAPD, is on an early morning jog in her hometown of Liberty Lake when she comes upon the body of a young nurse. The manner of death shows a pattern of highly controlled rage... moreAn edgy female police detective... An ambitious FBI special agent. Together they are at the heart of the ticking-clock investigation for a psychopathic serial killer. The bond they forge in this crucible sets the stage for high-stakes suspense.Detective Kara Quinn, on leave from the LAPD, is on an early morning jog in her hometown of Liberty Lake when she comes upon the body of a young nurse. The manner of death shows a pattern of highly controlled rage. Meanwhile in DC, FBI special agent Mathias Costa is staffing his newly minted Mobile Response Team. Word reaches Matt that the Liberty Lake murder fits the profile of the compulsive Triple Killer. It will be the first case for the MRT. This time they have a chance to stop this zealous if elusive killer before he strikes again. But only if they can figure out who he is and where he is hiding before he disappears for another three years. The stakes are higher than ever before, because if they fail, one of their own will be next... less

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... moreSomething 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.Quinn and Costa find themselves scouring the desolate landscape, which keeps revealing clues to something much darker—greed, child trafficking and more death. As the body count adds up, it’s clear they have stumbled onto much more than they bargained for. Now they must figure out who is at the heart of this mayhem and stop them before more innocent lives are lost. less

A bomb explodes on a sunset charter cruise out of Friday Harbor at the height of tourist season and kills everyone on board. Now this fishing and boating community is in shock and asking who would commit such a heinous crime—the largest act of mass murder in the history of the San Juan Islands... moreA bomb explodes on a sunset charter cruise out of Friday Harbor at the height of tourist season and kills everyone on board. Now this fishing and boating community is in shock and asking who would commit such a heinous crime—the largest act of mass murder in the history of the San Juan Islands.Forensic profilers know there are two types of domestic terrorists: those who use violence to instill fear for political purposes but stop at murder because it detracts from the cause, and those who crave attention and are willing to maim and murder for their own agenda.Accused of putting profits before people after leaking fuel that caused a massive fish kill, the West End Charter company may itself have been the target. But as special agent Matt Costa, detective Kara Quinn and the rest of the FBI team begin their investigation, they discover that plenty of people might have wanted someone dead on that yacht. Now they must track down who is responsible and stop them before they strike again. less