50/50 Heroes S01E05 - The Immaterialists

Wanda entrusts Mo and Sam with a strange crystal - she's not exactly sure what it does, but it seems to be related to the Spectral Sceptre. Sam keeps the crystal in her school locker because she doesn't trust her clumsy half-brother Mo with it, but when Sam loses the crystal after a mishap and it gets stuck inside John-Cedrick's locker, Sam is forced to ask for the power to go through walls so that she can recover the crystal undetected and avoid embarrassment.