Black Silk

Black Silk Thai or Prae dum is a 1961 Thai crime drama film written and directed by Rattana Pestonji.

Seni, a club owner, is under pressure by a rival, Wan, to pay an outstanding loan. Upon hearing that he has a longlost brother named Sema, Seni sends his loyal lieutenants, Tom and Pon, to visit Sema, only to find that Sema has died. Seni decides that he can use the situation to his advantage, and buries Semas body in a forest.Seni and Tom orchestrate the death of Wan, by setting fire to Wans car, pushing it off a cliff and framing Wans assistant Sin, also dead, for the murder. Seni then assumes the identity of his dead brother, free and clear of debts and Wans meddling. ........

Source: Wikipedia