Mairianne and Alexandra), which opens in Antigua Guatemala. The first location is the Church of La Merced. From the church their first clue is to find an image of the Virgin Mary. While Adrian and Simon go down literally the wrong avenue of exploration (looking in the public toilets), Alex spots the image, leading the girls to two alfombra, which are carpets made from sawdust. Moving away this dust reveals the second location clue which Saskia achieves by kicking it. Adrian and Simon manage to catch up, but waste time not noticing the message hidden underneath the design. Location two is the ruined Church of La Recoleccion, within which the contestants race to find a hidden scroll beneath an octagonal window. Their clue concerns the number eight, but they fail to notice the eight-sided windows. Marianne finds the scroll, though by flawed logic. Placing the cylindrical container for the scroll correctly mirrors a piece of artwork, revealing the name of the third location, the Pacaya volcano. At the volcano the female team make a rapid ascent, but Alexandra struggles with chest pains. Unsurprisingly, in the male team, Adrian also has difficulty with the climb but Simon's encouragement urges him on. This is not enough to beat the girls, however, who shortly uncover the name of the fourth location blazing on sticks at the volcano's summit, Yaxhá, the ceremonial centre of the Maya civilization. Arriving at the ruins in Yaxhá in the Petén forests, the teams reach the Mesoamerican pyramids, where they must decipher Mayan glyphs. Saskia's code breaking talent leads her to discover that this task requires simple knowledge of frequency analysis (cryptanalysis). Solving the clue with ease, the girls are directed to the river, where they must fill a well with water, causing refraction to allow them to view the name of the next location. However, in their haste, they fill the well with dirty water, preventing refraction due to the sand. Consequently, the boys, using clear water, solve the challenge first. That night, Jamie informs the contestants that tomorrow they must work individually for the first time. The first to find the symbol shall be safe, with all others facing the poison chalice. The next day, all the contestants are given a map and a key. Their task is to use the poem on the back of the map to work out the order and which treasure boxes