Art historian Carl Brandon Stehlke is a world expert on the great 15th Century Florentine painter Fra Angelico, and this is his dream project: a historic, once-in-a-lifetime exhibition of the artist's work at the Fondazione Palazzo Strozzi and the Museo di San Marco in Florence. The show brings together more than 140 works from 70 different lenders and reunites the sections of Angelico's great altarpieces, scattered when Napoleon closed the city's churches and convents in the late 18th and early 19th Centuries, now fully restored and seen together for the first time in 200 years. Carl takes Maria Margaronis through the process of mounting such a massive exhibition from conception to grand opening. In the restorers' studios she hears how new technologies are revealing the limpid colours of paintings once thought beyond repair. And in the stillness of the San Marco convent Carl explains how Angelico's intimate, deeply humane frescos guided the friars' meditation and spiritual life, and how he fell in love with the artist's work nearly 50 years ago.