Ranbir Kapoor joining the 'PK' team for a cameo created a lot of curiosity amongst the audience, a leading entertainment portal has finally raised the curtain from this secret.

Reportedly the actor turns out to be an alien in the closing scene of the film. It will be Kapoor's first film with Aamir Khan of his career. Ranbir has not only done a cameo in the film, but he has also shared screen space with Khan.

Even though the climax is revealed, 'PK' still is a must watch this weekend.