Lovers and Other Killers by Penelope Karageorge

New York journalist Cass Cooper becomes the prime suspect following the brutal stabbing to death of her ex-husband Vance on his release from prison. He served a mere five years for a Ponzi scheme that lost millions for investors. Psychologist Noah Lazeroff had testified that he was not evil -- but a gambling addict who made the mistake of playing with Wall Street money.
While in prison, Vance penned a tell-all memoir, a potential blockbuster that his friend book publisher Dev Lal looked forward to publishing -- but the manuscript mysteriously disappears.
Cass's search for a killer takes her from her Greenwich Village apartment to a billionaire's Park Avenue penthouse to the country retreat of an experimental group working with the new LSD. Everyone has a secret, including psychologist Noah Lazeroff, a gifted lover, but can he be trusted? How about glamorous Prudence Duluth, who will go to any lengths to get what or whom she wants. Or Miranda Nightingale, a brilliant scientist who boldly experiments with drugs and sex.
It's a riveting, can't-put-it-down story that will keep you absorbed until the final pages and shocking reveal.