Ghost Whisperer (2005)

Season 2: Episode 15

Melinda gives a speech on her career at Grandview High. While she’s at the school she sees a group of cheerleaders who are having some mean and vicious things happening to them just as their cheerleading semi-finals are approaching in just a few days. Melinda discovers that the dead cheerleader can’t cross over and someone else has been casting spells on the squad.