Quadrilogy

[Lanell]

A story contained in four parts.
Mostly known from the title of the boxset of Aliens-series films, Alien [Quadrilogy]. An awkward mix of Greek and Latin, seen as incorrect by some linguists (despite the common word television being a similar combination of Greek and Latin). The Latin-rooted word [tetralogy] means the same thing and avoids the [awkwardness].

[Little_Girl]

A literary or artistic work consisting of four parts; a series or group of four related works; a tetralogy.