Hidden in Blood Stained Shadows (Book 4 of the John Steel mystery thriller series)

John Steel is a British Detective working for the NYPD. A mysterious character with a secret past and a nose for trouble. This fast paced series with keep you guessing, and wanting more.
Detective John Steel returns to investigate a murder of a young woman in her apartment, and the disappearance of the roommate. The investigation becomes complicated by the woman’s past, and the return of an old enemy.
Question is…why is he back, and what does he want?