The murders of a nightclub guest and a man working out in his own apartment had one thing in common: both victims were employees of professional dominatrix Lady Heather (Melinda Clarke). Grissom (William L. Petersen) reluctantly undertakes the murder investigation, knowing all too well that Lady Heather is the one person who can really get under his skin and force him to confront his own hidden demons. Elsewhere, Catherine (Marg Helgenberger) loses her professional detachment when her ex-husband Eddie disappears and her daughter Lindsay is nearly drowned after a car accident. ~ Hal Erickson, Rovi