King Arthur's Graham McTavish was recently added to the cast of John Rambo.

According to Variety, he will play a team leader hired to find three captured missionaries in Southeast Asia. Sylvester Stallone wrote, directed and produced the film. It is currently shooting in Thailand.

The next chapter finds Rambo recruited by a group of Christian human rights missionaries to protect them against pirates, during a humanitarian aid deliver to the persecuted Karen people of Burma. After some of the missionaries are taken prisoner by sadistic Burmese soldiers, Rambo gets a second impossible job: to assemble a team of mercenaries to rescue the surviving relief workers.

B. Alan Orange