The story revolves around an Artic expedition headed by Bela Lugosi and his associate, scientist John Carradine, as they search for what might be the missing link. They find a frozen cave man...why this is called an ape man is totally lost on me. It must be based on the huge lack of success from an earlier Lugosi film called The Ape Man, of which this film has no relation too in plot whatsoever. Anyway, Lugosi brings this man back but finds that it needs at least a part of someone else's brain. He begins to search for possible subjects and settles on Carradine's soon-to-be fiancee. Carradine is not enthusiastic in the venture any further and severs ties, and the real mayhem begins as Bela gets to really ham it up trying to find and finally succeeding with a substitute. The Return of the Ape Man is undeniably cheap, poorly scripted, and laughably acted by most; it does, however, remain thoroughly entertaining due in large part to Lugosi in a charged-up role and Carradine in a rather subdued one. The cast credits list George Zucco but alas he is nowhere to be found. Quite a shame considering his ability to add class to almost anything.