By Perjury

S19 E9: Charlie Sawyer (guest star Adam Mastrelli), a plaintiff in a class action lawsuit involving the death of his father in a plane crash years earlier, is found shot to death in his car clutching an oxygen canister. The lawsuit had been delayed due to the murder of the judge in the case. The oxygen container is key to the airline's defense in the lawsuit and Sawyer was looking to make a deal with Pan World that would leave the other plaintiffs and their attorney, Marty Winston (guest star Dallas Roberts), out of the money.