In the past month alone, shadowy portraits have been found hidden in longstanding masterpieces by Titian and Picasso. What can they and other such discoveries tell us?

Ecce Homo depicts Jesus Christ bound, wearing a crown of thorns, and standing next to the Roman official Pontius Pilate. The painting underneath, however, is an image of an unknown man with a ...

Borja, Spain’s Ecce Homo, a famously botched restoration of a painting of Christ by an octogenarian, has held the crown of ...

In this instance, it was a full portrait, which he turned upside down and painted over with “Ecce Homo.” “I am not aware of any case where we can safely map the direct painting of a ...

Miguel Falomir, director of the Prado, said the painting’s new owner had worked with experts to restore Ecce Homo to its former glory. He said the work arrived in Spain in the 17th century.