Sandra was obsessed with Leonardo, a morbid, all-consuming obsession that made her willing to die for him. It began four years earlier when she started stalking him, tracking his every move, monitoring his every step, sending him warnings about his enemies' traps, sacrificing things for him, and even killing some of his men for reasons unknown to some. She was loyal, completely devoted to a man who didn't even know her name. He had never seen her, never knew her name or identity, and never would. Not while she used the FBI to cover up everything she did, employing forty intermediaries before monitoring or penetrating any of his security systems. She had touched him more than once, but he didn't feel her, didn't see her; he was either asleep or under a sedative. And it would have been dangerous for him to know her identity, to know who left lipstick kisses on his skin and then vanished.

She spent years in hiding, impossible for him to find, impossible for him to even recognize her face. She killed men for him, and he didn't know. He knows he's being watched, he knows someone is following him. The only thing he knows about the person following him is that she's a woman, nothing more.

His security system was terrifying, his guards were terrifying, everything in his organization was perfect and untouchable, but she did. She hacked into his computer systems, his phones and wireless devices, entered his palace and his suite specifically, and none of his men noticed. He tried thousands of times to set traps for her, with his men writing reports about the times she appeared, such as him sleeping, or being on the verge of death. His men even concocted elaborate scenarios about harming him, but she never fell into their traps, she never even appeared. But when he was actually injured and unconscious in the middle of a battle, she shot all his enemies and tried to wake him. She shook him, kissed him, called an ambulance from a public phone, and disappeared.