Something monstrous is killing animals in the Californian woods, local scientist Wayne (Ed Kemmer) has discovered a living example of an extinct lizard which was kept alive in a rock for millennia so something odd is going on. Dr Cleveland (Morris Ankrum) and his daughter Janet (Sally Fraser) have meanwhile arrived to look for evidence of a Conquistador giant. With the help of Wayne they find Conquistador remains but the giant himself is not quite as dead as might be expected...
A standard and perfectly reasonable monster film, though the monster is not from outer space but Renaissance Spain (someone should have told the poster maker that). However, the film has a rather gaping plot hole. We see Vargas the giant (Buddy Baer) seemingly coming back to life but if that is so then what was killing and mutilating the farm animals mentioned earlier in the film? Vargus has the typical motivations of a Spanish officer bought back to life after centuries in suspended animation: kill everyone or find something to have sex with!
