A man who calls himself The Chairman talks with various mob bosses and informs them that he knows who among their people are undercover operatives sent by the government. He offers to weed them out for a fee. But one man, named Cardoza who is based in Texas refuses but when the Chairman tells him that a Senator is in Dallas to meet with Alex on how to deal with him, he claims that it doesn't bother him. But, he actually decides to take her out. The Chairman then informs the Rangers who stop Cardoza's men. Later when the Senator is informed of undercover agents turning up dead, she decides to form a task force to find who is doing it and she wants Walker to head it. Walker accepts and he brings in, Trivette, Gage and Cooke to help him and he is told that a New York cop named Rosetti is part of his team. Thinking that whoever is doing this must be hacking the Government's computers, Trivette gets a hacker who is in jail to help them. They start by going after Cardoza.