The final Alberg novel was clearly intended as such--as a sendoff. Indeed, Alberg is almost less important to the novel than his new sergeant, Edwina Henderson, the protagonist of subsequent novels. As usual, Wright is interested in the vagaries and complexities of the mind, flowing in and out of the consciousness of several characters, and resolutely insisting to show everyone as flawed. Indeed, Alberg is rather a dick, both in how we see him inside his own mind, and in how we see others react to him. Also as is often the case with Wright, the killer as not a typical murderer. Though she is a serial killer, Mrs. O'Hara is a cleaning led into said life by a philandering husband and by an evidently burgeoning mental illness (see sees herself as a punisher of sin, whether pedophilia or just being an obnoxious mother-in-law). Wright also makes clear that becoming a murderer can happen, or not happen, based on some degree of chance--that is, everyone has some degree of internal darkness or imperfection that can lead them astray. Wright's writing is lyrical and smooth, so her work is a stylistic joy as well. Thoughtful murder mysteries are always a pleasure