Undone

I've not followed Karin Slaughter's work though her name comes up often in the realm of police procedurals/crime fiction and she has a lot of fans. The characters of Undone are quirky and interesting: two agents with the Georgia Bureau of Investigation, Will and Faith, both come from bad childhoods. Will is dyslexic and Sara had a kid while still a kid herself. They apparently appeared in a number of her other books (e.g., Fractured). In this one, Faith passes out inexplicably and is taken to the hospital where we encounter another character from a different Slaughter book (Faithless), the on call emergency doctor Sara Linton. Sara is a widow; her dead husband was a cop, and she is damaged goods. In fact, they all are, but more endearing for all of that.  Faith, it turns out, is pregnant and going into full-blown diabetes and she's having a hard time with both diagnoses. The three are brought back together when a horribly tortured woman is brought into the emergency room and it starts to look like she's only one in a string of victims. Personally, I had a hard time with all the grisly details of the torture, although told from a forensic perspective rather than from the serial killer's, they were off-putting. Enter with caution.