AllMovie

X Marks the Spot was the first of eight brisk wartime-oriented melodramas, each running slightly under an hour, produced and directed in rapid succession by George Sherman. Private detective Eddie Delaney (Damian O'Flynn) swings into action when his father (Robert E. Homans), a police sergeant, is gunned down by rubber racketeers (please recall that rubber was a valuable commodity during WW2). With the help of heroine Linda Ward (Helen Parrish) and police lieutenant Decker (Dick Purcell), Delaney chases after the villains, experiencing all sorts of serial-like dangers along the way. Numbered among the bad guys are the typecast Jack LaRue and the cast-against-type Neil Hamilton (later Batman's Commissioner Gordon). Though the script covers familiar ground, X Marks the Spot is exhilarating entertainment in the true Republic Pictures tradition.