Ira Brooker’s review published on Letterboxd:
An Egyptian mystic shows up in a sleepy Massachusetts town with a mummy in tow, bent on exacting revenge on a bunch of boring WASPs who violated a tomb back in the day. There's a lot of incredulous babbling punctuated by the occasional mummy-strangling and/or flashback footage from the previous Mummy flick.
I'll grant that Lon shambles with the best of them, but I come to Lon Chaney Jr. movies wanting a little more than anonymous shambling behind layers of (admittedly pretty good) mummy makeup. Other than a game "swarthy villain" turn from Turhan Bey and a brief cameo from George Zucco, this isn't much more than a decent distraction.
Also, it culminates in a heroic lynch mob hunting down the only non-white guy in town. I mean, yeah, the guy's guilty as heck, but still.