Cold Heart by Lynda La Plante

Lynda La Plante, renowned for her Emmy Award-winning series Prime Suspect, returns with the gripping thriller Cold Heart. 
When movie mogul Harry Nathan is murdered with a single gunshot in his Beverly Hills swimming pool, private investigator Lorraine Page faces a daunting array of suspects, including an angry widow and two ex-wives. As Lorraine navigates the treacherous waters of lust and conspiracy in the international art world, her investigation is complicated by the interference of new police chief Jake Burton, who seems to know her troubled past.
For Lorraine, solving Nathan's murder becomes about more than just a job—it's a fight to regain her self-worth. Cold Heart combines crime, love, and intricate suspense, showcasing La Plante's mastery in crafting realistic crime dramas.