Earlier when Lisa was about to leave Tom's house, she looked at the cab suspiciously but got in anyway. Now, everything about Tom was suspicious to her.
What if he wasn't an ordinary cab man? What if he was going to take her straight to the police station or somewhere else? She thought about those possibilities but quickly shook the thought out of her head. She trusted Tom. She didn't know why she trusted him, but she knew he wouldn't do that to her. But even though she knew so, she didn't know whether the cab was really a spy.
She got into the taxi and told him to take her straight to Li Chen's house. She had to meet him first before going to the base plus, she had to use her car there and not the taxi.
Immediately Li Chen opened the door, she blew up at him.