The Winter Sister by Megan Collins

Her older sister snuck out at night to see her boyfriend.  She'd leave the window unlatched so she could sneak back in before morning.  But her sister has bruises and it looks like this boyfriend is treating her rough.  She locks her out so she will have to come through the front door and will to explain to her mother why she was out and how she got bruised.  But she never came back home...

Touchstone and Net Galley let me read this book for review (thank you).  It will be published February 5th.

When she is located she's dead.  She was strangled.  Her sister tells the cops about the boyfriend but there's no evidence to make a case.  She leaves the city and moves on after graduation.  But when her mother gets cancer and needs her care, she has to go back home...

She checks in with cops and finds the case is still open but they have no leads.  She looks for leads and one man tells her to talk to her own mother.  She knows she didn't kill her, why talk to her?  When she does, she tells her nothing.  But as she snoops around the house she learns things she never knew.

The killer is still alive and well in town.  Proving it is almost impossible, but when tempers rise, the truth comes out.

This is a sad tale with lives being ruined by one person's actions.  Some of the secrets were shocking.  There is hope for the future if they can shut the door on the past...