Fillmore!

Ingrid Third, Public Enemy #1 (1x8)

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Fillmore's partner moves away to Tennessee, and he is partnered up with Brad Parnassus, the smartest kid at X Middle School. Rebellious and super-smart new student Ingrid Third doesn't take her introduction to X student body well at all, and a giant stink bomb explodes in the hallways. The case looks like a slam dunk - or is it?