Thinking of Becca and Arthur in the mansion made Tommy miss them. He felt like he wanted to go back home but he also just got to the office and he didn't want to make Becca uncomfortable.
He considered his relationship with Becca unbreakable and would never be. Meanwhile, Becca thought that they broke up because after all, she was the one who broke up with him first.
When he was in the office he turned on the mansion's CCTV. Since Arthur's presence, there's no way he wouldn't have installed CCTV. So he put it on secretly without Becca knowing.
His face was so happy to see that Becca was using her time as best she could for Arthur. He could work calmly if he saw his two spirits look fine.
There was a sudden knock on his office door. He saw the CCTV outside and was shocked to see Sheila who was knocking on his office door.
Tommy's face stiffened a bit because he hadn't spoken to Sheila in a long time. Since then …