This seems to be something like a hotch-potch with nothing of Jack London in it whatsoever but maybe casually inspired by some of his tales - there are some wolves howling, there is a dog being allured by them, there is a beautiful half Indian girl all dressed up like in an Indian masquerade for tourists, but then there is a lot of bustle about radium and a mine of it - this doesn't look like Jack London at all. And all those workers and interested parties of the mine, including some picturesque Irishmen, don't seem to mind at all that radium is supposed to be radioactive. Maybe it wasn't in those days. But the most surprising point is that the protagonist John Carroll sings, and by singing he attracts that half Indian girl who sings as well. This is now tilting at great risk to a musical in the mountains, and you almost expect Jeanette MacDonald and Nelson Eddy to pop up, like in a Sigmund Romberg operetta, but there are no more than two songs - the rest is all about radium, the dog and the wolves and intrigues about the mine. It's not a bad film and not a bad story, but Jack London would have shaken his head in utter dismay not knowing whether to laugh or to cry.