Mildred Henshew, the ravishing niece of a town reporter, arrives for her summer holiday, and she's welcomed by a youngster who promptly leaves his girlfriend, to befriend the newcomer. The storyline follows the teenage sexuality's logic, with Mildred being promoted from brat to 'young woman', after she and the boy visit the murder scene. Mildred threatened with leaving, the boy tempted her with a secret swimming hole, and a descent in a dark house follows, with both teenagers getting dirty. Monogram treats the audience with a comedy about teenage detectives, in a small town, and while the romance was enjoyable, the denouement, with the teenagers in the modest dark house during a thunderstorm, is neat, and the only reason to give the movie the name it has; except that, unlike other comedies, here the mystery plot makes sense.
Marcia Mae plays a girl from the city, during a holiday; she's a bit vain, being a young woman played as such, and has a strongly peculiar voice.
Like many other movies, this vehicle with an exploitative title was made to be enjoyed, not analyzed.