Queen of the Night by J.A. Jance (2010) William Morrow 

Every summer, the Queen of the Night blooms on the Tohono O’odham nation.  A young girl witnesses a murder. At the same time, a retired homicide detective looks into a cold case from almost half a century ago. Meanwhile, the homicide detective’s wife deals with memories of another murder.

The Black Ice by Michael Connelly (2003) Little Brown & Co.  

Harry Bosch finds a narcotics officer killed with a suicide note that he doesn’t believe.  He has to follow a trail of drugs across and into Mexico.  He can’t save everybody, but he can wreak justifiable revenge.

Blood Bound by Patricia Briggs (2011) Ace

Mercy Thompson, a walker who turns into a coyote, is the only one who can battle a vampire who has been targeting the local werewolf pack.  She is immune to vampire wiles, and that let’s her get close enough to make a difference.

The Affair by Lee Child (2011) Delacorte Press

Reacher is re-activated and sent to a murder scene to find out what happened, who did the deed, and then to cover it up because it involves a top-secret project.  But the local sheriff, a woman, is also trying to get to the truth.  The attraction leads to a bed, but the problem needs to be solved.  There is conspiracy and those who want to keep Reacher from his mission.  Not a good place to be.

Cat & Mouse by James Patterson (1997) Little Brown & Co. 

Alex Cross is almost murdered in his own home by a prison escapee who blames Alex for putting him in prison.  In the meantime, another killer is pursued by a detective from Europe.  While the detectives try to trap the men they are pursuing, the killers try to trap the detectives.  Who will survive?