The Widow of Weeping Pines (Mad Women Series #2) by Amanda McKinney

Therapist and struggling author Betty Lou Abbott has a secret, one she keeps locked in the basement of the historic mansion she inherited from her late husband. Her fiancé, Ian, also has a secret: he is having an affair with one of Betty Lou's clients. She thinks so, anyway.

As Betty Lou's life becomes intertwined with the beautiful, successful Carmen Marquis, her intention to expose the affair turns into a dangerous obsession. Especially when she learns there is more to Carmen than meets the eye.
Caught in the middle of this cunning pair of women is Nicholas Stahl, a crooked detective who is determined to prove the truth-that one of them is a cold-blooded killer.

Two women-one crazy, one ill-and both have secrets they would kill for.
Two men-one innocent, one ruthless.
All four will leave you wondering who you can trust.

✻ Welcome to the Mad Women series, a titillating and totally unputdownable ride through the mind of a woman scorned. Each book is a standalone novella of psychological and domestic suspense. ✻