The Diamond of the Day (1)

Overview

High in the mountains, a great horde gathers; Morgana prepares for war with a vengeful Mordred at her side. Merlin feels the weight of his destiny like never before as the ancient prophecies play out with terrifying accuracy. But before he can save his beloved Camelot, he must save himself. For it is not just the kingdom Morgana wishes to destroy – it is also Emrys.

Guest Stars

Alexander Vlahos

Mordred

Tom Hopper

Sir Percival

Rupert Young

Sir Leon

Eoin Macken

Sir Gwaine

Erin Richards

Eira

Peter Guinness

Ari

John Lynch

Balinor