Two weeks after a deadly 18-vehicle pile-up on the Yamuna Expressway, a husband is desperately searching for his wife, Parvati Devi, who went missing in the accident. While 20 people were killed and bodies identified, Devi was not among them. Her children, who survived, recounted how she helped them escape before the bus caught fire. The family is seeking answers from authorities, who state the matter is under investigation.