<P> Cassidy and Mac soon begin dating . In "Ain't No Magic Mountain High Enough", they attend the school's winter carnival together . Dick and his friends make fun of Cassidy for holding hands with Mac . He lets go of Mac's hand and walks away angrily . Later, the two prank Dick by finding a transgender woman online to set him up . Dick sees her leaning on his car and begins to make out with her, believing she is a "hot mom". He brings her into his car and soon comes out disgusted . He threatens Cassidy, but decides not to punch him when the latter warns him he'll get him even worse next time . </P> <P> Cassidy and Mac's relationship falls apart when he refuses to become sexually intimate with her . When she mentions to Cassidy that she had gone to Veronica for advice, Cassidy abruptly dumps her for bringing Veronica into his personal life . In "Not Pictured", the pair reunites on time for graduation . They attend Logan Echolls' party at the Neptune Grand . They go back to their hotel room, but Cassidy is unable to perform . Mac comforts him and gets up to take a shower . </P> <P> In the second season finale, "Not Pictured", it is revealed that he was among the boys molested by Woody Goodman . Veronica discovers that Cassidy set up the bus crash to kill Woody's other victims, who intended to come forward . He had planted the rat on the bus so that some of the kids (including himself) would plan for another ride back to school, giving him a perfect view of the bus and thus enabling him to crash it at the right moment by detonating the explosives he had planted via cellphone . Cassidy, who was in charge of the special effects for his friend Hart Hanson's war movies, had gotten the explosives from his Dad's mechanic Curly Moran, Aaron Echolls' former stuntman . He then proceeded to frame Moran for the bus crash . The PCHers beat up Curly, but Cassidy realized they would not kill him and finished the job himself by running him over with his car . He then wrote Veronica Mars' name on Curly's hand and dropped the corpse in the water, effectively sending the investigation in the wrong direction . </P> <P> Cassidy is also responsible for many of the events of the first two seasons such as orchestrating the exposure of his father's real estate fraud, and Goodman's fall from public favor . When Veronica finds out Cassidy was a part of Woody's Little League team, she puts the pieces together . A call to Hart Hanson confirms her theory . Veronica also discovers that he did rape her after all, giving her chlamydia in the process, which he had, in turn, contracted after being molested by Woody . Cassidy leads Veronica to the roof of the Neptune Grand after he intercepts a text message she had sent to Mac, warning her to stay away from' Beaver' . After Cassidy blows up the plane bringing Goodman back to Neptune following his arrest (believing Keith Mars was also on the plane), he tries to kill Veronica . Logan stops him, however, and Cassidy prepares to commit suicide by jumping off the roof of the Neptune Grand . Logan tries to stop him, but Cassidy asks why he shouldn't kill himself . When Logan is unable to answer, Cassidy jumps to his death . </P>

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