The Lies We Tell by Theresa Schwegel

It's hard to love a book when you're not sure you really like the main character. Gina Simonetti is a Chicago police detective raising her brother's 2-year-old daughter, Isabelle, since he became addicted to pain killers. That makes her a sympathetic character. But what makes her less sympathetic is that she has MS and is keeping it from her boss and colleagues--which is understandable but kind of dangerous since she's driving with no feeling in her feet and carrying a gun.

While investigating a case involving an elderly woman with Alzheimer's who was beaten up, possibly by her son, Gina ends up chasing said son, trips, loses her gun to the suspect, and is badly injured. When she gets out of the hospital and is supposed to be resting, she keeps pursuing the case using sometimes less than official means. She eventually does figure out what happened to the elderly woman and uncovers a whole web of deception. That part of the book I liked. But everyone's life in this book is such a total mess--Gina's, her brother's, her partner's, the hospital security guard's, the babysitter's, the elderly victim's, her son's, her caregiver's--that it's kind of a depressing read.

Truthfully, I read an earlier work by this author that I liked better though Lies is a well-constructed story.