The painting represents the “Ultima Cena” of Jesus with his apostles, all so tight and gathered around Him, who is the centre of the image. The leading theme is Communion: the Lord is depicted while He offers a tiny piece of blessed bread to an apostle leaning towards him. The wine consecration will happen in another moment, as we can achieve from the figure of the apostle in the foreground, who holds a jar in his left hand and raises a bowl of wine, unblessed, in his right hand. The apostles are chatting amongst themselves, unfocused, and they really don’t seem to be part of the mystic ritual that is about to be fulfilled.In this altar piece the naturalistic remind to Caravaggio strongly arises; it is so evident in the lighting choice done by Vouet, creating successful light and shade effects. Furthermore, the link with Caravaggio is revealed by the character in the forefront, who is painted in a harsh, realistic attitude: his naked foot is turned towards the observer, and this is so close to the image of the barefoot pilgrim of the “Madonna di Loreto” by Caravaggio (which is preserved in the church of st. Augustine in Rome).The canvas was required by the Brotherhood of the Sacrament in 1627, to decorate the altar of the sixth left lateral chapel, built in the lauretan Basilica. The author’sign: SIMON VOUET, is clearly displayed on the stoll on which the apostle in the red garment sits.The opera remained in that place until the year 1792, when it was brought to the Vatican Museums’ Laboratory, to be replicated with the mosaic technique; in 1830 the mosaic substituted the altar piece, definitely. In 1874 we have some notice referring to the altar piece stored in the Apostolic Palace east wing.The altar piece was restored by the Superintendence (Monument and Fine Arts Office) for the Artistic and Cultural Heritage of the Marche Region, in 1977-1978.”