Doctor Who: Death Takes a Holiday (2004)

The Doctor and Jamie send the Brigadier and Zoe off to Mexico to retrieve a Zybanium crystal from atop the huge pyramid at Chichen-Itza. However, the Brigadier and Zoe are unaware they are being followed by sinister figures aboard ship who also want the crystal. This becomes clear when a giant goon comes after Zoe, only to find himself thrown overboard by the resourceful woman. Later on, Zoe's stateroom is broken into by the creepy henchman who plants a listening device to discover their plans. The Brigadier and Zoe are shadowed closely as they travel by bus to Chichen-Itza. Arriving there, Zoe uses the Doctor's pocket watch to home in on the crystal and they discover they must climb the steep stairs to the top of the pyramid. The henchman follows them up. At the top they discover the crystal is hidden behind a secret door covered in Mayan hieroglyphs. The Brigadier decides to let Zoe decipher them and has a nearby sit down next to another tourist as the henchman keeps close watch. Meanwhile, Zoe meets two archeologists who tell her about the symbols and she works out that they need to spill the blood of a warrior first. The Brigadier volunteers but the henchman steps out to confront him and kills the tourist. Thinking on his feet, the Brigadier kicks a rock at the henchman who is knocked out and bleeding. To the amazement of the archeologists, the secret door opens and Zoe quickly grabs the crystal. They make a hasty departure off the pyramid before too many questions can be asked. Back at the ship everything seems resolved when yet one more threat is revealed.