Watch The Vanishing Legion (1931) (1931) HD Full Movie Free on SolarMovie. Watch The Vanishing Legion (1931) (1931) online free. A mysterious master criminal known as The Voice plots with his gang to sabotage the Milesburg Oil Co...A mysterious master criminal known as The Voice plots with his gang to sabotage the Milesburg Oil Company, but the rightful heir has a secret army of her own to protect her rights.