Mrs. Lambert faces a blood transfusion crisis when a nurse mistakenly reported her blood type as Fh-negative, putting her at risk of a deadly reaction. Harley rushes to save her using traditional bloodletting to remove the dangerous mixed blood, despite Selena's protests and fear of worsening her condition due to her Rh-negative blood. Lindsay insists this painful treatment is necessary to save Selena's life, but Selena suspects foul play, questioning if Harley’s actions were meant to kill her. The episode ends with Selena realizing she never received Harley’s blood, deepening the mystery and tension between them.