Diane Kentner (Laura Harris) was one of the main villainesses from "Fallen Idols," episode 7.17 of CSI (airdate February 22, 2007). She was a photography teacher who had basketball player Ryan Lansco (the episode's murder victim) as a student.
Diane was interviewed by Warrick Brown regarding Ryan, with Diane stating that she and Ryan spoke over the phone about her photos of Ryan with Ryan's girlfriend, Megan Cooper. As revealed later on, Diane had engaged in a sexual encounter with Ryan, and had developed an obsessive affection for Ryan afterwards. She even stalked Ryan while he was held captive by Sheila Latham (another of Ryan's lovers) and Charlie Kellerman at an equipment shed, as they were forcing Ryan to admit that he was a carrier of crabs and he had been spreading them to Sheila and Megan. Diane snapped photos of the events, including one of Megan shortly before she unwillingly killed Ryan in anger. In an act of revenge, the evil Diane ran over Megan in her car, resulting in Megan becoming permanently paralyzed.
Diane's tryst with Ryan was revealed via a "hit list" that Ryan posted online. The list consisted of women Ryan had slept with, and among the names was Diane--listed as "Diane K. - Taught me a thing or two." The villainess ended up interrogated by Warrick; denying the relationship and also denying running over Megan, but agreeing to hand over her DNA. However, the DNA matched the sample from the crabs, which revealed Diane's relationship with Ryan, leading to Jim Brass and the rest of LVPD heading to Diane's home.
After discovering a slip for a storage facility, Brass and the rest of the police headed there, and found Diane's car with a broken taillight. The light revealed that Diane ran over Megan, and when they went inside, they found Diane lying dead next to Ryan's body, with cameras taking photos of the deceased couple. Diane had rigged the cameras to snap the photos before committing suicide via an overdose of lithium, which she had been taking for her bipolar disorder.
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