Yes, I know this is largely speculation, but former colleagues and I have come to suspect something does not smell right with the Hannigan resignation and would seem to be quite plausibly related to Flynn. It also explains how and why the investigation proceeded as aggressively as it did: information derived from a major foreign intelligence partner could not be easily dismissed or ignored and would have to be acted upon.

"Psilocybin does in 30 seconds what antidepressants take three to four weeks to do," David Nutt, a professor of neuropsychopharmacology in the division of brain sciences at Imperial College London explains in the film. Researchers have found that a single dose of psilocybin accompanied by therapy can have a transformational effect on mental health — like a "surgical intervention" — able to treat even cases of depression and anxiety that resist standard treatment.