The third of Columbia's "Whistler" series, Power of the Whistler once more stars Richard Dix as the tortured protagonist. This time, Dix is cast as an amnesiac named William Everett, who is given aid and comfort by pretty Jean Lang (Janis Carter). Assuming that Everett has been victimized by someone, Jean tries to help him regain his memory. This proves to be a major mistake, which Jean's sister Frances (Jeff Donnell) discovers to her horror. Though it was fascinating to see Richard Dix in an off-the-beaten-track role, Power of the Whistler isn't up to the standard set by the first two "Whistler" films: even so, the climax, staged in the loft of a deserted barn, is a beaut.
by Hal Erickson synopsis