Mallory's Oracle (Kathleen Mallory, Bk 1)
Mallory's Oracle - Kathleen Mallory, Bk 1 Author:Carol O'Connell Sgt. Kathleen Mallory, a computer hacker for the NYPD, started life as a wild child on New York City's streets. She was adopted by police detective Louis Markowitz and his wife, Helen, but the happy years with them have merely laid a civilized veneer over what is still a semi-savage product of the urban jungle. Now, Mallory is an orphan agai... more »n: Helen Markowitz died years before and Detective Markowitz has just been felled by a serial killer. Mallory buries him and then, while on compassionate leave, methodically tracks the killer.« less
This has been my favorite series ever since it was first published. You just know Kathy Mallory is going to get the bad guys. There are 9 books in the Mallory series and they are worth reading from start to finish.