Watch Son of Frankenstein (1939) (1939) HD Full Movie Free on SolarMovie. Watch Son of Frankenstein (1939) (1939) online free. Returning to the ancestral castle long after the death of the monster, the son of Dr. Frankenstein m...Returning to the ancestral castle long after the death of the monster, the son of Dr. Frankenstein meets a mad shepherd who is hiding the comatose creature. To clear the family name, he revives the creature and tries to rehabilitate him.