Review: a charming but slight comedy . 
Sentiment: positive

Review: birthday girl does n't try to surprise us with plot twists , but rather seems to enjoy its own transparency . 
Sentiment: positive

Review: an elegant visual sense 
Sentiment: positive

Review: throwing out so many red herrings , so many false scares , 
Sentiment: negative


Review: succeeds due to its rapid-fire delivery and enough inspired levity that it ca n't be dismissed as mindless .