The Dexter actor will play a controversial filmmaker on the CBS drama, according to TVLine.
The character will find himself in legal trouble when his documentary on suicide allegedly inspires a young girl to take her own life.
Camargo played Brian Moser, the Ice Truck Killer, in the first season of Dexter and returned for a guest appearance in the recent sixth run.
He has also appeared in such films as The Twilight Saga: Breaking Dawn - Part 1 and 2008's The Hurt Locker.
Camargo's Good Wife episode is expected to air in March. His former Dexter co-star Jennifer Carpenter also made a recent appearance on the legal drama.
The Good Wife airs on Sundays at 9/8c on CBS in the US. More4 airs the show on Thursdays at 9pm in the UK.
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Watch a promo for the next episode of The Good Wife below: