5x12 Souls of the Departed

Hades YEAH! :D

For the rivers:

"There are five main rivers that are visible both in the living world and the underworld. Their names were meant to reflect the emotions associated with death.

The Styx is generally considered to be one of the most prominent and central rivers of the Underworld and is also the most widely known out of all the rivers. It's known as the river of hatred and is named after the goddess Styx. This river circles the underworld seven times.

The Acheron is the river of pain. It's the one that Charon, also known as the Ferryman, rows the dead over according to many mythological accounts, though sometimes it is the river Styx or both.

The Lethe is the river of forgetfulness. It is associated with the goddess Lethe, the goddess of forgetfulness and oblivion. In later accounts a poplar branch dripping with water of the Lethe became the symbol of Hypnos, the god of sleep.

The Phlegethon is the river of fire. According to Plato, this river leads to the depths of Tartarus.

The Cocytus is the river of wailing.

Oceanus is the river that encircles the world, and it marks the east edge of the underworld, as Erebos is west of the mortal world."