Derren Brown: Trick or Treat (2007)

S1E2 Ventriloquism

When IT consultant Andy finds himself grappling with a sudden split in his personality, his life spirals into chaos. Juggling his professional responsibilities while navigating the complexities of his new dual identity proves to be a daunting challenge. As he struggles to understand this unexpected change, Andy must confront the consequences of his actions and the impact on his relationships. This journey of self-discovery forces him to reconcile his two selves, leading to surprising revelations about his true nature.