Florence has infiltrated the inner circle of drug baroness Miranda Priestley by posing as au pair Celeste, babysitting her adopted daughter Dolores. Unexpectedly, Miranda returned with "Celeste", Dolores, Miranda's sister Karin and 'security chief' Liam Calder to St Marie to negotiate with local businessman Harley Joseph. Florence witnesses Miranda and Harley arguing and then is woken by a gunshot during the night but is confronted by Miranda and told to get back to bed. The next day Harley is found dead in Harley's shed, where Miranda retrieved something, so the team must interrogate and solve the case all while not breaking Florence's cover, but she communicates her suspicion by Dictaphone hijack. The case is found to revolve around the murder years of ago of devout mother Priestley, linked to the earlier-murdered Otis.
—KGF Vissers