Hot Docs Toronto Documentary Film Festival is reporting strong advance box office sales on a number of titles and has scheduled extra screenings for the final day of the festival, which runs from April 30 to May 10.

The feature documentaries generating interest include three world premieres; Academy Award-nominee Hubert Davis’ Invisible City, which follows the lives of two inner-city black teenagers over three years in Toronto; Rosie Dransfeld’s Broke, a verité portrait of a lender of last resort, the pawn shop; and Philip Lyall and Nimisha Mukerji’s Red Roses, the story of three young women who have bonded over their life-threatening need for lung transplants.

Also selling well are US filmmaker Greg Barker’s Sergio, a portrait of Brazilian diplomat Sergio Vieira de Mello, who was killed in the attack on the Baghdad UN offices; and the Canadian premiere of Dutch filmmaker Mercedes Stalenhoef’s Carmen Meets Borat, the story of the Romanian villagers who woke up to discover they were portrayed as the Kazakhstani idiots in the infamous spoof documentary Borat.