Darby Wechsler

Darby Wechsler is the main villainess from "True/False," episode 7.04 of Without a Trace.

She was played by Sarah Ramos.

Darby Wechsler is a high school student and the best friend of Will Duncan, who was revealed to have hacked into the school's server and copied test answers, which he was giving away to several students. After learning about Will's cheating ploy, Darby spotted him at the Internet Cafe and followed him to an apartment building that his father used to carry on an affair with his mistress. She approached Will and asked him for the answers to an English Literature test, but Will refused, saying that he was done with the ploy. Darby went into a panic and rage about needing to pass the test so she could get into Cornell, and again demanded the answers from Will. After Will again refused, Darby's rage led her to shove Will down the stairs, killing him.

Later on, Darby's mother, Paula, arrived at the building, and after seeing what happened, both mother and daughter covered up the murder; doing so by dumping Will's body in a dumpster. Photos of Darby trailing Will to the apartment revealed her as the killer, and during her and Paula's interrogation, she confessed to the murder, stating that he wouldn't help him. Darby was arrested (off-screen) for killing Will.