Martyrs (2008) is a French-Canadian horror film directed by Pascal Laugier. The story follows two young women, Lucie and Anna, as they become trapped in a horrific cycle of torture and psychological trauma, orchestrated by a mysterious cult seeking to discover the secrets of the afterlife.
Pascal Laugier's New French Extremity entry films a torture cult that believes pain is revelation. The film's horror is that the cult might be right; the relief is that you cannot tell.