Calliope told Augie about the incident and he believed that someone was trying to destroy his business by taking her out.
In the previous episode of Tidelands, Calliope returned home after a ten-year prison stint and immediately became involved in her brother’s drug-running business.
When two children who had seen the incident with Calliope ran in and told Lamar about Calliope’s Tidelander powers.
Adrielle used some sort of magic to learn that Calliope was a Tidelander, Corey also came to this realization after their romantic encounter.