Pierce Brosnan looks a bit too European (and hairy-chested) to be completely convincing as a Kali-worshipper, but he gives an intrepid performance as an Englishman undercover with the Thugees, a sort of Donnie Brasco of the 1800s. The movie itself has some harrowing moments as we watch the thugs ply their killing trade, and the inevitable one-against- many showdown, coming when Pierce's ruse is revealed, is suitably tense. A lot of the drama, however is rather flat and unmemorable and the movie lags in the middle.
There is a nice period look here, though, similar to that of the Sharpe TV series, and fans of that one might find this an interesting diversion.