Nora is convinced she was visited by the ghost of a murdered woman; she makes Frankie and Trudy search their building. This leads to a shocking discovery.

The team investigate whether a man acquitted of a grisly murder is indeed innocent or guilty.

When Trudy discovers that her new dream home has contaminated water, the gals investigate the source with help from nighttime vigilante, Lady Justice.

Mary looks into a morality violation by Rita Hart's modern dance troupe. Frankie questions if they've brought the Spanish Flu to Toronto.

A shakeup in all the gals' lives affects sees Frankie's dad alive but in danger, Trudy leave the DPD, Mary going on the record, and Flo's new family threatened.