Why was Tate Donovan killed off in the series Damages?

Tate Donovan's character, Tom Shayes, was killed off in the series "Damages" to heighten the dramatic stakes and underscore the perilous nature of the legal battles faced by the main characters. His death served as a pivotal moment that deepened the tension and showcased the ruthless environment of the law firm. Additionally, it allowed for character development and plot progression, impacting the choices and motivations of the remaining characters, particularly Ellen Parsons and Patty Hewes.