If you like J. D. Robb, try...
Love me to death: a novel of suspense by Allison Brennan — First book in the Lucy Kincaid series: Surviving an attack by an online predator, Lucy Kincaid wants to join the FBI and fight cyber-crime, but in the meantime, she volunteers with a victim's rights group. But when the predators she hunts start turning up as murder victims, the FBI takes a whole new interest in Lucy.
Sworn to silence by Linda Castillo — First book in the Kate Burkholder series: Kate Burkholder grew up in idyllic Painters Mill, OH where many residents drive buggies, shun electricity, and distance themselves from the complications of modern life. The presence of a serial killer shatters the stillness of the town, leaving its citizenry terrified and on guard.
Alone by Lisa Gardner — First book in the D.D. Warren Series: Detective D.D. Warren must investigate her fellow officer after police sniper Bobby Dodge shoots a husband who appears on the verge of murdering his wife. At the time he was sure he was doing the right thing. However, in the days that follow things don't seem as crystal clear.
First grave on the right by Darynda Jones — First book in the Charley Davidson series: Charley sees dead people. That's right, she sees dead people. And it's her job to convince them to "go into the light." But when these very dead people have died under less than ideal circumstances (i.e., murder), sometimes they want Charley to bring the bad guys to justice.
A perfect evil by Alex Kava — First book in the Maggie O'Dell series: A deranged killer is performing his gruesome rituals undetected in the terrified community of Platte City, Nebraska -- and all evidence points to recently executed serial killer Ronald Jeffreys. It takes the expertise of FBI profiler Maggie O'Dell to reveal that Jeffreys was convicted and executed for two murders he didn't commit and that the real killer is still on the loose.