You Deserve to Know by Aggie Blum Thompson

Neighbors Gwen, Aimee, and Lisa share more than playdates and coffee mornings on their tranquil street in East Bethesda. They confide their deepest secrets, navigate the challenges of motherhood together, and provide a support system that seems unbreakable.
But when Gwen’s husband is found murdered after one of their weekly Friday night dinners, the peaceful quiet of their cul-de-sac shatters. The seemingly idyllic world of the three close-knit mom friends becomes a web of deception, betrayal, and revenge.
As the police investigate, the veneer of friendship begins to crack, revealing hidden tensions, clandestine affairs, and long-buried jealousies among the three women. With suspicions mounting and the neighborhood gripped by fear, Gwen, Aimee, and Lisa must confront the chilling truth about their husbands, and the sinister undercurrents in their own friendship.