This proved to be the final instalment in the series of the adventures of poor old "Kharis" (Lon Chaney Jr.) as he continues to try and reunite with his "Princess Ananka" (this time Virginia Christine), and is actually one of there better ones. A group of workmen are draining a swamp when one of their number is found strangled. Rumours of there being mummies buried there are rife, much to the chagrin of the boss "Pat Walsh" (Addison Richards) who just wants to get on with his tasks. His frustration is compounded by the arrival of a couple of boffins who are ostensibly seeking the mummified remains for a museum but have, of course, a devilish ulterior motive that ends up with them finding an ancient monastery (in Louisiana!?). There, the High Priest (Peter Coe) concocts the elixir from the tan leaves that empowers our embalmed enforcer to once again search and all hell breaks loose. It's a straightforward recycling of the other stories, but is still quite fun to watch and it's lit in a fashion that - just about - lends itself to the tiniest bit of peril.