The Virginian S02E13 - Siege

Trampas wins $1,000 at poker in Medicine Bow and heads to his old stomping grounds of Logan, New Mexico to repay several debts. There he has a run in with comancheros, led by Pedro Lopez (Joseph Campanella), who virtually run the town and have the town leaders under their thumb. Trampas discovers that some of the comancheros have murdered his old friends and turns them over to the Marshall (Ron Hayes) to hold for trial. However, Pedro threatens the townsfolk and they cave under and force the Marshall to release the murderers. Pedro and his men then come gunning for Trampas.