Marc Simon, an entertainment lawyer and director of “Unraveled”—a documentary that delves into the spectacular fall of his former boss Marc Dreier—has joined Fox Rothschild as partner in New York.

Simon spent the past eight years as a partner at entertainment boutique Cowan, DeBaets, Abrahams & Sheppard. He officially joined Fox Rothschild in March, but the firm confirmed his hire Wednesday.