Lily Bard Series by Charlaine Harris
In reading order:

Shakespeare's Landlord
Lily Bard is a loner. Other than the day-to-day workings of her cleaning and errand-running service, she pays little attention to the town around her. But when her landlord is murdered, Lily is singled out as the prime suspect, and proving her innocence will depend on finding the real killer in quiet, secretive Shakespeare.

Shakespeare's Champion
Lily Bard was running from shattering memories when she moved to Shakespeare, Arkansas. Now cleaning houses pays her bills. Working out helps her heal. Still protecting her scars, she hides a hard body and impressive skill at martial arts under baggy sweats. And nobody knows how strong she is until racial violence has her looking behind closed doors for a killer--doors to which a housecleaner might have the key. When Lily uses her training in goju to help a black man jumped by white teens, she does it for justice...only to hear he's been abducted and beaten to death a few weeks later. Then a bodybuilder is killed at her gym. Both incidents jar Lily's need for security and refuge. Looking into closets, sweeping under rugs, she soon uncovers enough dirt to confirm that something sinister is growing in her adopted town. Getting involved could endanger her life. But Lily is seeing a new man and dreaming new dreams. And no one can make this strong woman run again.

Shakespeare's Christmas
Lily Bard is going home for the holidays. More comfortable in baggy sweats than bridesmaid's frills, Lily isn't thrilled about attending her estranged sister's wedding. She has moved to Shakespeare, Arkansas, to start a new life, cleaning houses for a living, trying to forget the violence that once nearly destroyed her. Now she's heading back to home and hearth--just in time for murder. The town's doctor and nurse have been bludgeoned to death at the office. And Lily's detective boyfriend suddenly shows up at her parents' door. Jack Leeds is investigating an eight-year-old kidnapping and the trail leads straight to Lily's hometown. It just might have something to do with the murders...and her sister's widowed fiancé. With only three days before the wedding, Lily must work fast to clean up the messy case before her sister commits...marriage!

Shakespeare's Trollop
Lily Bard, Shakespeare, Arkansas's local karate expert/cleaning woman, has a particular knack for finding skeletons in closets. But when the local woman of ill repute is found murdered, being familiar with her dirty laundry could make Lily the next Shakespearean to die.

Shakespeare's Counselor
When cleaning woman and karate expert Lily Bard attends a weekly group therapy session, she has no idea that murder is on the agenda.