Flame Ventures, Origin Entertainment and The Mother Teresa Center have hired Keir Pearson to I Thirst, the first exclusively authorised biopic of Mother Teresa.

Pearson is expected to complete his research trip in Kolkata, India, and Tijuana, Mexico, during the next month and begin writing by the end of February.

The producers said the goal was to commence shooting by the end of 2014 in time for global release in spring or summer 2015.