The Best Episodes Written By Howard Overman

The team's plan to con an auction house with a comic book forgery goes awry when corrupt copper, Sam Phillips (played by Fay Ripley), decides she wants in on the play.

The mighty citadel is buzzing in anticipation of the Prince's birthday celebrations, as the fantasy drama continues. But Arthur's old adversary, Odin, promises to ensure this is one party Camelot will never forget - for among the assembling guests lurks a deadly assassin set to strike. As the dust settles, Camelot is left devastated. Just how far is Merlin prepared to go to put things right; would he really risk everything and reveal his secret?

Arthur brings a curse upon Camelot. Eager to help his people, he asks Anhora for advice. But is he brave enough to face the challenges ahead?

Arthur is challenged to a duel by a mysterious warrior. Arthur and Merlin then find themselves on a quest on Morgause's behalf. A dark secret is discovered by Arthur that could change Camelot forever.

The gang realizes that there's something weird going on in town and it looks like the mysterious, straightlaced "Virtue" organization is behind it.

When astrophysicists detect a transmission from another galaxy, it is definitive proof of intelligent extra-terrestrial life. The world's population waits for further contact with baited breath. They do not have to wait long. Within days, mankind is all but wiped out; just pockets of humanity are left in an eerily deserted world.

After the devastating alien attack, disparate pockets of survivors emerge into a shattered world. They quickly realise they must put their differences aside if they are to stand any chance of survival. For they are not alone. Something sinister lurks in the shadows and whatever it is, it won't consider its victory complete until it has killed every last human. But who are these attackers and why are they hell-bent on destruction?

Dirk's client David Edwards is found dead after claiming that the Pentagon are out to kill him. His widow hires Dirk to catch the murderer, telling him that her husband was working on top secret computer software which could spell danger if it fell into the wrong hands. Dirk believes there is a connection with his other client, Emma Reynolds' philandering husband Oliver, obsessed with the fact that his horoscopes keep coming true. Having shown that the horoscopes are a fraud Dirk sets out to find the real reason for Edwards' murder.

When Uther banishes Gwen from the kingdom, Arthur resolves to leave Camelot with her.

As the dust settles on their brave new world, the survivors are forced to face some cold truths. Catherine is stunned to discover the part she played in bringing about the alien attack. Helen becomes fixated on revenge. And Emily momentarily regains her sight. But is the miracle cause for celebration, or concern?

As Emily grows concerned by her recollections of time spent with the aliens, Bill is also perturbed by the similarities between Emily and the aliens; Zoe encourages a reluctant Bill to use these similarities to their advantage.

Josh Futturman feels stuck in his dead-end job as a janitor so all he really does is play Biotic Wars, an unbeatable videogame the rest of the world has given up on. But when Josh beats the game, mysterious visitors from the future appear: the world is in danger, and Josh is the only one who can save it.

A group of misfits with nothing in common must perform community service, but get caught in a freak storm that gives them superpowers.

Curtis regrets the night of his arrest and uses his new power to travel back in time to change history, but it's not as easy as he thought.

Camelot is hosting its annual sword tournament and knights from throughout the realm have come to compete for its coveted title. Amongst those hoping to win the crown is Knight Valiant.

When Merlin comes across a secret chamber, he accidentally releases a goblin. The mischievous little creature possesses Gaius, making the wise and renowned court physician turn into a shadow of his former self, quickly developing a taste for gold, ale and magical jokes. To make things worse, the king suddenly becomes bald and a nasty scourge of flatulence hits the royal household. Will Merlin be able to figure out the source of all troubles, return the gobblin back to where he came from and put an end to the havoc before any real damage is done?

The Camelot Knights stumble across an eerie shrine deep in the forest, its chilling atmosphere betraying a dark history best left undisturbed, as the magical drama continues. But when Elyan ignores Merlin's warning, his actions spark a chain of events more frightening than anyone could possibly have imagined... Can a grievous wrong be put right? Or will past demons change the future forever?

When a stranger gives Arthur the power to summon the dead, the king finds himself torn between head and heart. Unable to resist temptation, he seizes the chance to speak to the person he misses most – his father, Uther Pendragon. But the spirit world is a dark and dangerous place, for little does Arthur realize that his decision comes at a terrible price. Against all odds, Merlin must put right Arthur's mistake before Camelot, and everything they have built, is destroyed forever.

The survivors make some disarming discoveries not only about the aliens but also about themselves. Mokrani goes on the offensive, taking the fight to the aliens. Ash is forced to make the hardest decision of his life. And Chloe’s past catches up with her, threatening to rip apart the delicate semblance of normality she is so desperately clinging on to.

Six months after Emily disappeared on an alien ship, the London survivors have set up a resistance base from which they plan to fight back; the aliens have since appeared and they look exactly like humans.

Cracks start to show as the survivors find different ways to cope. Jonathan’s increasingly perturbed by Sacha’s strange behaviour. Emily proves to be an exciting conundrum for Bill. And Mokrani is horrified as his men delight in the opportunity to exact revenge.

Pearce gives Juliette a terrifying deadline, but an investigative breakthrough puts Zara and Vincent back on top.

Nathan is desperate to move back home, and when the group makes a discovery, he soon realizes he might have found his opportunity.

Alisha is having fun using and abusing her powers but she can't seem to get the one man she really wants: Curtis.

Determined to prove that the gang was involved in Tony's disappearance, Sally focuses her investigation on Simon.