Legendary Dallas trial lawyer Mike McKool announced Thursday that he has left the 130-lawyer firm that he co-founded 32 years ago in order to take on an assignment that he sees as the final big case of his career.

McKool, who has tried more than 100 cases to juries resulting in verdicts exceeding $1 billion, told The Texas Lawbook that he has shed many tears today because he is leaving McKool Smith to take on a case for a client that presents a conflict with other clients at the law firm that bears his name.