Blue Death — Lillian O'Donnell

At forty-one, Norah Mulcahaney's star is on the rise: She's passed the rigorous NYPD's captain's exam, and she's also succeeded in adopting a baby boy. But, her happiness is shattered when, within a month's time, four of her fellow officers commit suicide, each man found dead of a wound inflicted by his own service revolver. When Norah's longtime mentor, Chief James Felix, asks her to pay a visit to one of the grieving widows, Norah finds herself immersed in a controversial case that hits way too close to home. Chief Felix very nearly becomes the fifth victim, compelling Norah to prove the deaths are murder, not suicide. It's a race against time -- before another of New York City's finest is laid to rest forever.