But Oliver and Felicity (Emily Bett Rickards) won't be the only ones joining Diggle on his trip to Russia. Determined to assert her power over Queen Consolidated, Isabel Rochev (Summer Glau) will also tag along. "Isabel is really trying to establish her authority in the company," Glau says. "She really doesn't like being left out on any of his work trips. She feels like she needs to keep an eye on Oliver. At the last minute, he tries to sneak away without her knowing, but she seems to know more than she leads on."
Isabel will certainly be suspicious as to why Oliver is running off with his supposed assistant Felicity, but whether she believes Oliver is the Arrow remains to be seen. "She suspects he's more than meets the eye," she says. "She's on to him, but he's very smart and he's very dedicated to keeping this secret, so he's not making it easy for her."
Still, there could be more to Isabel's quest for dominance as fans learn more about her backstory in upcoming episodes. "She has her reasons for wanting to take over this particular company and for wanting to assert her control and feeling like she needs to understand Oliver better," Glau says. "Their relationship is definitely going to shift. I think she definitely has feelings for him. They're complicated feelings. Sometimes she wants to reach across the table and strangle him, but she also has a growing respect for him."