Janet Thornton is a character on DEXTER.
She was an attempted victim of A.J. Yates, first seen unconscious with Yates while he was observing Vogel's "hero" Dexter Morgan, who begins invesitgating him. While Dexter was searching through Yates' lair, he discovered that Yates was holding her captive and that she had suffered an intentionally fatal stab wound from Yates. Dexter rescues her, and she is later mentioned as having agreed to testify against Yates by Angel Batista.