Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
"Betty and Veronica" is episode 16 of season 1 of the television show Veronica Mars.
Plot
When someone steals Neptune High's mascot, Polly the Parrot, Veronica goes undercover at rival school Pan High as "Betty." In retaliation, Wallace and the Neptune High basketball team steal the Pan High goat. When a video surfaces over the Neptune High news channel showing Polly's kidnapper demanding that Wallace, the best player, not play at that night's game, Veronica is able to deduce who it is: a Neptune High player who has bet heavily against his own school. Veronica also checks her mother into rehab, but not before getting a lot of information.
Arc significance
Lianne doesn't know who Veronica's father is — it could be either Jake or Keith.
Lianne says that she was with Jake at the time of Lilly's murder, but that Celeste barged in. However, Celeste was only there for twenty minutes.
Veronica gets the interrogation tapes of Jake and Celeste. They both claim they were at a hotel for two and a half hours, but their stories conflict.
Veronica finds that Clarence Wiedman bugged her room, so she bugs his office and gets him to reveal that Abel Koontz has a daughter, Amelia DeLongpre.
It is revealed that Veronica has been baking cookies and putting them in Wallace's locker. This is a reference to the Pilot in which Wallace says "...underneath that angry young woman shell, there's a slightly less angry young woman who's just dying to bake me something."
