I believe this to be the second in the Spenser series. Audible has released many of the early titles read by a favorite narrator, Michael Pritchard. We meet Susan Silverman and Healy (both of whom have cameo roles in the Stone series) for the first time as Spenser is hired to find a boy who has disappeared who has ostensibly been kidnapped (with his guinea pig.) We also learn Spenser’s first name (I’m not telling.) And his age. Heh heh. Solid mystery layered with Spenser’s familiar wise-cracks. The characters are mostly disreputable and dysfunctional; one wonders what Parker thought of his neighbors.