Episode Discussion - 5.04, "Cooperative Polygraphy"
A MYSTERIOUS TEAM OF INVESTIGATORS ARRIVES AT GREENDALE TO POLYGRAPH THE STUDY GROUP AFTER PIERCE HAWTHORNE’S UNTIMELY PASSING - WALTON GOGGINS GUEST STARS - After Pierce Hawthorne’s unexpected passing, a team of investigators headed by the no-nonsense Mr. Stone, arrives at Greendale to submit the study group to lie detector tests before they can be considered for distributions under the will. Tensions mount as Mr. Stone digs in with the questions and the group members learn a little more about one another than they wished.