Isaiah is famous for his complex, highly detailed mosaics, which cover 50,000 square feet (4,600 m2) of South Philly with elaborate designs made from tiles and mirror pieces.

Zagar reveals many personal details of his life during the film, including revelations about his childhood and the existence of an adulterous relationship that threatens to tear his family apart.

- Nathan Lee, The New York Times "Where most documentarians would rest on the laurels of a great subject and riveting present-tense drama, director Jeremiah Zagar has observed too much of his father's creative logic to cheat us with artless hagiography.

- Aaron Hillis, The Village Voice "What began as a look at a father's art becomes an unintended record of an American family's dissolution in director Jeremiah Zagars lovingly made, clear-eyed documentary.

After raising two sons - we see one, the director's brother, in the midst of drug rehab - Isaiah begins a relationship with his assistant as his astounded wife tries to figure out her increasingly idiosyncratic husband.