He didn’t even need to show his face to wreak havoc on Oliver and Felicity, who were the only two members of Team Arrow still inside.
There are only a few episodes left in Season 5 of Arrow, and we’re getting closer and closer to the final confrontation between Team Arrow and Prometheus.
While the majority of “Dangerous Liaisons” followed the conflict between Felicity’s alliance with Helix and Team Arrow’s ties to ARGUS, the episode ended on a cliffhanger that saw Prometheus pay a visit to the Arrow bunker.
The episode ended on an explosion in the bunker, and the promo for next week’s episode reveals that the cause was an EMP, and that means that Oliver and Felicity are in big trouble.