Bitter Season / Tami Hoag / 408 pages

Minneapolis detective Nikki Liska has transferred from homicide to the new cold case unit.  Theoretically, she won't have to work the long shifts required by active cases and she will more available to her young sons.  Her ex, also a police officer, is an intermittent, immature cog in the family wheel.  Nikki's first case is a twenty-five year old murder of a cop whose family and former detective do not want the case reopened.  Why not?  Concurrently, her old unit is working on the brutal murders of a university professor and his wife.  Facts uncovered by Nikki lead to a resolution of both cases in a nonstop, can't-turn-the-pages-fast-enough whodunit.