After Natwar Singh, Thakur politician Amar Singh is also preparing to open up his can of secrets and is working on an explosive book about his political experiences. Sources close to Amar also claim that he has signed a contract with a big international publishing group and is getting the money he wants for his autobiography. The four chapters the publishers are relying on the most are about Amitabh, Ambani, Mulayam and Saharashri.