Over the last thirty years, artist Isaiah Zagar has covered forty thousand square feet of Philadelphia with grand-scale mosaics. When Zagar’s son Jeremiah picks up a camera to document his father’s career, he is confronted with the reality of the man in front of the lens.  Mental illness, infidelity, sexual abuse, and addiction are some of the jagged pieces that make up the mosaic of Isaiah Zagar’s life. In A Dream is an unblinking look at a celebrated artist who may not always be the husband and father his family needs him to be. NT