'Professor Marston and the Wonder Women' is a disarming exploration of a superhero's kinky roots

For a movie with no shortage of ropes, whips and naughty-nurse role play, the actual moment of consummation in “Professor Marston and the Wonder Women” is remarkably tame.

Audiences will recognize the visual cues of the upmarket Hollywood drama, the traditional panicky “sex scene! sex scene!” signifiers....