Season 52016 Apr 2026

This season was split into two distinct halves: the "Dark Swan" arc and the journey into the Underworld. While it was praised for its ambitious 100th-episode milestone and the introduction of Greek mythology via Hades, some viewers felt the split-season format began to show signs of narrative exhaustion.

Airing its final season in 2016, it is widely regarded as a masterclass in concluding a sci-fi series. It moved away from the "procedural of the week" to a high-stakes, serialized battle between two artificial intelligences. Season 52016

A general shift toward darker, more "end-game" stakes for long-running casts. This season was split into two distinct halves: