Though Delteil's killer has been arrested, Maigret senses that the person responsible for his death has yet to be unmasked. Meanwhile, Maigret and his team close in on Olga Borysenko's killer, but their investigation lands Maigret in more danger. When Maigret finally uncovers the truth behind Delteil's murder he makes a powerful enemy, one who has already outmaneuvered him. From MASTERPIECE.Though Delteil's killer has been arrested, Maigret senses that the person responsible for his death has yet to be unmasked. Meanwhile, Maigret and his team close in on Olga Borysenko's killer, but their investigation lands Maigret in more danger. When Maigret finally uncovers the truth behind Delteil's murder he makes a powerful enemy, one who has already outmaneuvered him. From MASTERPIECE.