Veronica Mars: Hi, Infidelity

Veronica is accused of cheating by one of her fellow students after posting the best grade on a class assignment. Over the course of her investigation to clear her name, she discovers her Criminology professor may not be exactly as he seems. Meanwhile, Keith has a tough decision to make with a married woman to whom he's clearly attracted; Wallace must choose between his dream profession and his basketball career; Parker confesses she has a crush on Piz. And, when Parker IDs a guy she might have been with on the night of her rape, Veronica finds some clues that might corroborate the suspicion. But after Lamb arrests the suspect, Logan finds Veronica and tells her the guy didn't do it, but can't say how he knows.