Undue Influence by Steve Martini
Recently widowed attorney Paul Madriani is struggling to hold on to what is left of his family when he and his young daughter are caught up in yet another family tragedy. Paul's sister-in-law, Laurel Vega, is involved in a bitter custody battle with her ex-husband, Jack, who wants to take their children to Washington DC. When her case disintegrates, Jack's new wife is found dead in the family home. Laurel is arrested and charged with murder.
Madriani takes on her defence but the evidence against Laurel is daunting and her own failure to cooperate - in particular, to tell Paul where she was on the night of the murder - leaves the reader wondering if perhaps he is defending a guilty woman. But what actually happened that night is more tragic than anything revealed so far. And it is up to Paul to uncover the shattering piece of evidence that will lead to the terrible truth.