Manual for a Murder

Synopsis: Marina, a 38-year-old woman with a strained marriage, falls in love with a married coworker who has a child. The two engage in a torrid affair, and one of them commits a murder.Oscar, a detective specializing in homicides, is assigned to the case. He is a cunning man dedicated to his work and family, often joking about typical police series.
"I couldn't stop reading, such was the interest in finding out how the story would end. I liked:
... the story,
... the way it was told (with two narrators),
... the simplicity of the writing,
... the relevant theme
... the characters, despite not agreeing with 'the end justifies the means, ' I sympathized with the villains." - Goodreads