I was never a great fan of Frankie Darro until I realized that this feisty kid always did his own daring stunts. "The Devil Diamond" proves no exception. The rest of the players are also quite interesting, because (1) this is the last film made by the lovely Joan Gale, and (2) it's the only movie of Rosita Baker. Joan Gale's twin sister, June Gale, had a longer career but played mostly bit parts. Maybe Joan decided to quit which she was ahead. She's a most attractive and charming lass here. Then there's Rosita Baker who gives a very spirited, but entirely "natural" performance as a lovelorn pest who keeps annoying our little hero. Oddly, despite the fact that she virtually steals the movie, this is Miss Baker's only film appearance! Also deserving our attention are Jack Ingram, as the most prominent of the henchmen, and Byron Foulger in an early film role which he quite convincingly plays with a Swedish accent! Admittedly, the story is not much to get excited about, but it packs in an occasional bit of "B"-grade action and is very nicely photographed in SepiaTone.