Oil painting on canvas. The biblical episode depicted refers to the story of Daniel, the prophet in the court of King Darius the Mede who, for having prayed to his God, was condemned to be thrown into the lions' den. But God saved Daniel, sending an angel to close the jaws of the beasts, and the king pardoned Daniel by instead condemning those who had denounced him. The subject has been depicted several times in art, for the fascination linked to history but also for its exotic flavor due to the presence of wild beasts; in particular we remember the version by Rubens of 1615, where the prophet is depicted naked in the underground pit, while he prays ardently, surrounded by a crowd of ferocious lions. The work presented here instead proposes a version centered on the dialogue between the prophet and the angel, who face each other, standing out with the vivid colors of their robes against the dark background of a prison; there is only one lion, meekly crouching at the angel's feet, and therefore the spiritual and salvific dimension of the biblical event prevails. According to the famous art historian Maurizio Marini, a specialist in the painting of Caravaggio and Baroque art, who had had the opportunity to view the painting years ago, the work could be attributable to Antonio Maria Vassallo (1620 -1664) for the compositional and chromatic choices. The painting, restored and relined, is presented with a listello frame.