In 1942, during the German occupation of the Netherlands, one of Van Meegeren's agents sold the Vermeer forgery "Christ with the Adulteress" to Nazi banker and art dealer Alois Miedl. Experts could probably have identified it as a forgery; as Van Meegeren's health declined, so did the quality of his work. He chain-smoked, drank heavily, and became addicted to morphine-laced sleeping pills. However, there were no genuine Vermeers available for comparison, since most museum collections were in protective storage as a prevention against war damage.