Secret Signature speaks about people who have a hidden secret agenda; these people have ulterior motives and plan evil things without your knowledge. You can be in a partnership with someone, yet they are planning to take control of the company themselves. A man may love his wife, with all his heart, and yet, secretly, the wife is subtly putting poison in his food. You can travel with someone (a friend, a relative, a wife or a husband), not knowing that they are planning to kill you. Most politicians can have secret plans to eliminate anyone who is opposing them in order to be in power. People carry so much evil in their hearts. No one is safe anymore.