Estelle recalled that Mr. Mysterious had previously exposed Gretchen’s photos and scandals to the public.

Since Mr. Mysterious is aware of Gretchen’s actions, it’s possible that he also knows about Melody’s wrongdoings.

Gretchen and Melody resorted to seducing and engaging with numerous wealthy businessmen to obtain money. As a consequence, the wives and children of these men harbored strong animosity towards them. It’s reasonable to assume that Mr. Mysterious easily obtained evidence ...