The Poisoned Chalice

"It's not your destiny to die at my hand."

- Nimueh

The Poisoned Chalice is the fourth episode of the first series, which was broadcast on 11 October 2008. It is a follow-on of the previous episode in which Nimueh attempts to enact her revenge on Merlin.

Sypnosis


Posing as a servant girl, the witch Nimueh enters Camelot seeking revenge on Merlin with a plot to poison him. Meanwhile, Bayard and the Knights of the Western Isles are welcomed to Camelot to celebrate the union between the two kingdoms. Unaware of Nimueh's true identity, Merlin saves Arthur from drinking from a poisoned chalice by drinking the potion himself, which puts him in a deep coma. Gaius discovers the origin of the poison and needs to make an antidote to save Merlin. Arthur disobeys Uther's commands and sets off on a quest to save Merlin. He ventures deep into the Forests of Balor to find an antidote, but little does he know he's walking into a trap...

Plot
Bayard, the king of Mercia, comes to Camelot to seal peace between the two kingdoms. Nimueh, posing as a handmaiden, purposely bumps into Merlin and flirts with him to gain his trust. Later when Bayard passes the two ceremonial goblets (One for Uther and one for Arthur) to drink, Nimueh takes Merlin to one side and tricks him into believing that Arthur's goblet has been poisoned.

He rushes in on the ceremony to warn Arthur, but is forced to drink from the goblet himself; where if he lives, he will be turned over to Bayard to use as he wishes. However, prior to coming to Camelot, Nimueh had poisoned and cast a spell on the chalice. Shortly after Merlin drinks the contents of the goblet, he begins to gasp, and then he collapses. With Merlin dying, Nimueh returns to her domain and Uther, believing Bayard was trying to assassinate Arthur, throws him into the dungeons.

Gaius, Gwen and Arthur carry Merlin home where Gaius discovers poisonous flower petal in the chalice. He explains to Arthur that an antidote can only be made from the leaves from the same flower, the Mortaeus flower, which may only be found in the caves beyond the Forests of Balor. Arthur decides to go find it, but Uther forbids it, saying Arthur's life is more important than Merlin's. Morgana, however, is able to convince Arthur to go, saying Caemlot would rather have a king who would risk his life to save a servant. While Arthur is gone, Gaius and Gwen notice the poison's effect is progressing rapidly and will kill Merlin sooner than Gaius originally thought. Through his research, Gaius discovers the poison is more potent when magic is used to prepare it, and quickly realises that Nimueh was behind it.

In the forest where the cave is found, Arthur finds Nimueh disguised as a maiden, claiming to have been abused and abandoned by her master. After fighting and defeating a cockatrice, Nimueh tells him she knows where the flowers are found and leads him to them. While in the cave she casts another spell causing the ledge Arthur is standing on to collapse. She leaves him clinging to the edge of cave to die, telling Arthur that it isn't his destiny to die at her hand.

Meanwhile Merlin, under the influence of the poison, begins to mutter out things about Arthur and say magical words that Gwen doesn't recognise. While Gaius sends her out for more water to keep his fever down. Merlin appears to be aware that Arthur is trapped in the dark, suggesting he is either subconsciously using magic or has some kind of link with Arthur, and creates a sphere of ethereal light in his palm. It then appears beside Arthur, trying to lead him the way out of the cave. Arthur is soon attacked by many more spiders, but manages to reach across to pick the flowers needed to cure Merlin, and then clambers up the wall to the exit of the cave, guided by Merlin's light.

However, once Arthur returns to Camelot with the flowers, he is immediately arrested and taken to the dungeons for disobeying Uther. He begs his father to take the flower to Gaius, but Uther, wanting to teach Arthur a lesson in obedience, crumples the flower and drops it outside the cell, saying he can find a new servant when he is released. Arthur reaches through the bars to get it back.

Gwen poses as a servant bringing Arthur's food in order to see if he had the flower. Arthur manages to secretly give her the flower, and Gwen returns to Gaius. In order to make the antidote work, Gaius secretly uses magic for the first time in the series, despite it being forbidden. Merlin then makes a fast recovery, and upon realising Merlin is awake, Gwen kisses him in happiness. Gwen apologizes for the sudden behavior as to which Merlin replies "It's fine. It's more than fine." He claims not to remember anything since he drank from the goblet.

News of Bayard's arrest reaches Mercia, and an army is soon sent to Camelot to free him. While Uther is preparing for the attack, Gaius reveals to him that the poison was magical and that Nimueh must have been behind it. Upon realising Bayard had been framed, Uther releases him from his dungeons and a potential war between Camelot and Mercia is averted. Uther then reveals to Arthur that the woman he met was Nimueh, and emphasises how he believes all magic to be corrupt.

Bayard is allowed to go free, and Arthur goes to Gaius and Merlin's house to make sure he is alright. After he has left Merlin asks Gaius why Nimueh had gone to all the trouble of framing Bayard for trying to poison Arthur instead of just letting him just drink the poison and die. Gaius tells Merlin that it was him that Nimueh wanted to kill, not Arthur.

From her domain Nimueh watches Merlin and curses him.

Cast

 * Colin Morgan as Merlin
 * Bradley James as Prince Arthur
 * Richard Wilson as Gaius
 * Anthony Head as Uther Pendragon
 * Angel Coulby as Gwen
 * Katie McGrath as Morgana
 * John Hurt as the voice of The Great Dragon
 * Michelle Ryan as Nimueh
 * Clive Russell as Bayard
 * Gary Oliver as Gregory
 * Jamie Kenna as Dungeon Guard
 * Paul Kynman as Sir Cador

Production crew
to be added

Reception
Episode four pulled in 5.92m (25.6%) for BBC One over 45 minutes from 7.05pm, a rise of 160,000 viewers from the previous episode.

Discontinuity, Plot Holes, Errors

 * After Arthur defeats the cockatrice, he does not retrieve his sword from the dead creature's body, yet when he is in the cave, he uses the sword to kill one of the big spiders.
 * When Merlin drinks from the chalice, he is holding it in his right hand. However, it is this hand, now clearly empty, that he raises to his throat when he began to choke and cough. When he collapses, the chalice is back in, and rolls away from, his right hand.
 * Strawberries can be seen as one of the foods at the feast. However, they were not brought to Europe until the 17th Century. This mistake is also made in The Lady of the Lake.