Mastermind Charlie Mascarenhas and his accomplice Riya are one of the greatest pair of thieves in India . A friend of Charlie , Raj is killed by the Russian mafia . At Raj's funeral , his wife hands Charlie a CD containing information about the transfer of gold by train from Russia to Romania . Charlie decides to rob the train with the help of imprisoned Don and con-artist Victor Braganza . They hire a team of criminals to join them in the robbery . The group includes Spider , who is a world-class hacker , an explosives expert Bilal Bashir , a prosthetic makeup artist Sunny , and an illusionist Ronnie . Charlie is also having an affair with Victor's daughter , Naina , who knows nothing about her father and Charlie's criminal activities . The group devise a plan to rob the Russian train in the sliest way possible . Spider hacks into a Russian satellite system and Ronnie uses his illusion to trick the soldiers guarding the gold while the rest of the team transfer the gold from the train . The robbery is executed successfully , however while celebrating Spider double crosses the gang and tries to flee with all of the gold . Spider is stopped by Ronnie , who is then shot multiple times by Spider's assassins . The group are chased by the assassins and Ronnie and Riya are killed . Charlie , Bilal and Sunny manage to escape after Spider blows up the location and flees with the gold . Charlie calls Victor to tell him about the betrayal , but Naina overhears the conversation . At the same time Spider's assassins breaks into the house and murder Victor . 
What is the last name of the person Charlie calls to tell about the betrayal?
Mascarenhas