Follow the pronouns.
He went to the pronoun "we" instead of "I"...
Did Mark Redwine drink a half bottle of Jim Beam believing he would be disqualified from the polygraph?
in the end, he knew he could not pass the test and could not dare go through with it. Reason overruled his need to control. He knew law enforcement was watching the show, and he appears to understand that the walls are closing on him.
What did he do to Dylan?
Did it start with "you're not going with your friends; you're here with me!" and escalate to Dylan defending his mother's name and honor?
After the first session, in which Mark Redwine failed to deny killing his son, the drama continued as Dr. Phil had challenged Mark Redwine to take a polygraph.
Readership weighed in on whether or not Mark Redwine would, in deed, take the polygraph.
Not a chance.
Mark Redwine attempted to divert attention away from himself, even blaming his ex wife, before Dr. Phil went directly after him.