The series began with an unexpected twist as the train transporting the twenty-five contestants suddenly stopped and three contestants, one from each carriage, had to leave. Those who chose to sacrifice themselves were Jack, Fozia, and 
. Later on, at the castle, three traitors were chosen with Armani, Linda, and 
 being tapped on the shoulder by Claudia.
Episode one ended with the traitors choosing their first victim, 
, because this player was assessed, probably correctly, as being astute. The first murder had been accomplished. Episode three saw the first traitor to be uncovered as 
 fell victim to over-confidence and was banished. The remaining traitors then disposed of 
 by murder.
With two of them left, episode five saw the traitors decide against a murder and instead try to seduce 
 to join them - the invitation was declined, though, so an opportunity was lost. Episode six was eventful as Dan was banished and four players were chosen by the traitors to take part in a death game. This involved each player having two cards, with the initial eight cards available being seven death cards with just one life card saving the player holding it. 
 was the unlucky player in the third and final round and was murdered in episode seven.
Episode seven also saw the banishment of 
 leading to 
 receiving an ultimatum to become a traitor or be murdered. The choice made was to become a traitor, and the player turned out to be ruthless. Two faithful were murdered and two more banished, with the traitors pulling the strings, before the banishment of the last of the original traitors in episode ten.
With only one traitor left standing, another ultimatum was issued with 
 being the unlucky player, as the traitor successfully set up the unwilling new traitor to be banished. The player did get some revenge by voting for the traitor at the round table, but would the remaining players realise?
The game then took another twist as one player was given the chance to become a seer and pick one other player who would be forced to reveal to the seer whether they were faithful or a traitor. The seer was 
 who, by chance, chose the sole traitor left in the game, meaning episode twelve had the seer and traitor accusing each other and trying to persuade the players left that they were faithful and the other was the traitor. The faithful prevailed and the last traitor was banished. In a final twist, though, the rules were changed and the banished player was not allowed to reveal whether they were faithful or a traitor.
Four players were left around the firepit, all of whom were faithful but were unaware. Two further rounds meant two final banishments and only two players left standing - Leanne and 
. As both were faithful, it meant they shared the prize pot of £94,600.