After strange occurrences in the middle of Antwerp, the team finds evidence that their recent ally, Merces, is none of the sort - she is, in fact, a Nephandic double agent, using both the agents and the Orphic Circle for her masters' nefarious ends. Supervisor Levi, who foresaw the betrayal, was working behind the scenes to use Merces for information and to contain her. Now, however, it was time to deal with her. Working in a nearby Technocratic lab, Merces was able to be contained as the lab was sealed of, but the team had to go in and deal with her in person.