What is a series of five movies called?

Excuse me, could you please clarify what you mean by "a series of five movies"? Are you referring to a specific film franchise that consists of five installments, or are you asking about the general term used to describe a collection of five films that are related in some way? If it's the latter, the term that is commonly used to describe a series of five movies is simply "a series of five movies" or "a five-part film series." However, if you're asking about a specific franchise, I would need more information to provide an accurate answer.