At a popular theme park, a new dancer/actor secretly experiences grief and rivalry from the other females in the show as she tries to fit in as the new girl, and survive as slowly employees are disappearing and no one knows why.

thanks guys for the input !

Due to time zones DPG and Richiev posted my exact thoughts before I had the chance to.

I would make it more personal and specify the inciting incident more:

After her only friend is mysteriously killed an unpopular shy dancer at a busy theme park must find the murderer before more are killed and she becomes his next victim.

Hope this helps.

"grief and rivalry from the other females as she tries to fit in" = "unpopular", lopping off 11 words from the logline. That's she unpopular implies she's not fitting in and suffering emotionally.

You don't really need that first part in the logline:

Here is the second half of your logline, (with a small change to the character)

"when employees begin to mysteriously disappear and die, a new dancer has to fight to survive and find the killer before she becomes their next victim."

Maybe have it say, ... At a popular theme park a new dancer/actor secretly experiences grief and rivalry from the other females as she tries to fit in, but when employees begin to mysteriously disappear and die, she has to fight to survive and find the killer before she becomes their next victim.

thanks for the input !

I agree with dpg, it would help to give the character a goal:

"When employee's of the theme park begin disappearing, a shy dancer who's the victim of bullying must prove she isn't the killer when her fellow employees suspect she's behind it."

Hope that helps, good luck with this!