Ranbir to lead 'Dhoom 4'? Here's what we know!

Aditya Chopra's 'Dhoom' franchise is one of Bollywood's most successful action-thriller series. There have been constant speculations about 'Dhoom 4', with fans eagerly awaiting the next instalment. There have been immense speculations surrounding the casting of 'Dhoom 4' after Aamir Khan had led 'Dhoom 3' which released in 2013.