K. L. Slater writes psychological thrillers that focus on tension and secrets within relationships. Her novels, including *My Husband Next Door*, *The Bedroom Window* and *The Girlfriend*, examine how trust breaks down in domestic settings. Her stories typically feature multiple perspectives and reveal information gradually, uncovering the psychological dimensions beneath everyday situations. Central to her work are characters caught in circumstances where reality becomes unstable and relationships contain hidden conflicts. A Sunday Times bestselling author, Slater appeals to readers who enjoy suspense centred on character psychology and relationship dynamics, where tension builds through careful plotting rather than external action.