In the second half of the two-part Mission:Impossible episode "The Controllers", Phelps has been charged with murder and placed on trial. It is all part of a plan to destroy the credibility of Dr. Karl Turek (David Sheiner), the creator of a dangerous mind-controlling drug called B-230. Unfortunately, Phelps is left in the lurch when the "witness" who was to have exonerated him is killed. As a result, the usual meticulous preparations of the IMF team are jettisoned in favor of desperate improvisation. Dina Merrill guest stars as IMF agent Meredyth. Written by Laurence Heath, Part Two of "The Controllers" was originally telecast on October 19, 1969.
by Hal Erickson synopsis