 Prothero was co-lead counsel in State v. Proctor, the falsely accused Seattle youth.After the Green River case, Prothero joined the Kent, Washington law firm of Hanis, Greaney PLLC (now Hanis Irvine Prothero, PLLC).At Hanis Irvine Prothero, PLLC, Prothero headed the Criminal Defense Department.