Libby, a former flame of Hitchcock Sewell, has returned to town with her two children, but minus one husband and one nanny. Libby's husband has been accounted for -- she left him back in Annapolis. However, the nanny, Sophie, is truly missing.

As soon as Hitch starts to nose around, Sophie turns up -- literally -- in the Severn River. She's quite dead, and just a little bit pregnant. The police suspect suicide, but Sophie's mom is adamant it's murder. Hitch's sense? He sides with the mother. Racing around town, Hitch finds more questions than answers.