What is Lady Heather's real name on CSI?

Lady Heather’s real name on CSI is Heather Kessler.

Heather is a recurring character portrayed by Melinda Clarke. She runs a professional domination business and becomes one of Gil Grissom’s most distinctive recurring acquaintances. Their relationship is built around mutual curiosity, respect, and long conversations about human behavior rather than a conventional romance.

The character first appears in the second season episode “Slaves of Las Vegas” and returns repeatedly across the series. Her expertise in psychology and her outsider status often give Grissom a different perspective from that of his colleagues.

Viewers sometimes confuse Heather Kessler with Ellie Brass, Kristy Hopkins, or Lily Flynn because all are connected to the wider personal world of CSI characters. However, those are separate characters; Heather Kessler is Lady Heather’s civilian identity and name in the show’s character listings.