Hes a bulldog in the courtroom and an insecure and lonely man outside of it.
His only focus in life is to convict Rusty Sabich (Gyllenhaal) of murder.
The role was played by Joe Grifasi in the movie.

(L-R) Renate Reinsve (inset)Greta Scacchi, Peter Sarsgaard (inset) Joe Grifasi and O-T Fagbenle (inset) Tom MardirosianSara Angelica Spilling/Warner Bros/Mike Pont/WireImage/Storm Santos
And hes not afraid to use the tragedy for political gain.
Tom Mardirosian portrayed the character in the movie.
Abrams and Rachel Rusch Rich executive produce for Bad Robot.

Kelley executive produces through David E. Kelley Productions alongside Matthew Tinker.
Gyllenhaal, Dustin Thomason and Sharr White also serve as executive producers.
Turow and Miki Johnson are co-executive producers.
Anne Sewitsky will direct and executive produce the first two episodes.
Greg Yaitanes will also direct.
Reinsve is repped by CAA and Narrative.
Sarsgaard is repped by Anonymous Content, WME, and Peikoff Mahan.
Fagbenle is repped by Buchwald and Hansen, Jacobsen .