You Should Have Known

Perfect for fans of Helene Tursten and Caroline B. Cooney, a senior moment turns to murder in Rebecca Keller's taut debut thriller that explores the bonds of family and the grudges we refuse to let go.

When retired nurse Frannie Greene moves into a senior living apartment, she finds a compelling new friendship with Katherine, only to later discover that Katherine is married to Nathaniel Kearney, the corrupt judge implicated in the death of Frannie's beloved granddaughter.

Observing the medication cart sparks Frannie's darkest imagination, and her desire for revenge combines with her medical expertise. In one dreadful, impulsive moment, she tampers with Judge Kearney's heart medication. However, the next day it is Katherine who is dead, and Frannie is horrified to realize she must have swapped the wrong pills.

As the police begin asking questions, Graciela, one of the medication aides, reveals to Frannie that a mistake she'd made could have led to Katherine's death. But the truth is, Graciela's error had kept Frannie from committing murder. Or did she?

Frannie must use her sleuthing skills to confirm her hunch. But now, she faces her toughest choice yet: protect a killer or put her own life in jeopardy.