Jeopardy (BBC TV Series) - Cast

Cast

• Harry Hastings (Craig Moncur) - Although less fit and outgoing than the other members of the group, Harry is a natural leader, and in the absence of their teacher, Gerry Simmons, he takes charge of the group. An epileptic, Harry chooses to leave his medication behind having not suffered from attacks in two years. Later on, he begins a relationship with Lucy.

• Lucy Jeffers (Samantha Bowie) - Known to the group as something of a tomboy, Lucy is considered one of the fitter members of the group, and well-suited to the outdoor life. Mostly level-headed, she gets on well with Harry, and they begin a relationship later on.

• Simon Tudor (James Anthony Pearson) - Simon is athletic and sporty, the school's football captain and one of the fittest, fastest and strongest members of the group. However, he is also very arrogant and self-confident, and prone to making bad decisions under pressure, leading him to betray the group. As a result, he very rarely gets along with the rest of the group, though he does start a rocky relationship with Chrissie. His later experiences with Vic, a tour guide of Aboriginal descent, change his perspective and sees him fit in with the group more easily.

• Chrissie McAteer (Charli Wilson) - A popular, fashion-conscious girl, often found wearing stylish clothing and complaining about the difficulties of staing in the outback. Having only come on the trip to get to know Simon better, she starts out self-centered, but through her experiences comes to care more for her friends than herself.

• Leon Duffy (Stanley Smith) - An energetic and strong member of the group who doesn't always take things seriously, which often agitates the group. He likes to be the center of attention and brings a bit of laughter to the group. He tries to play the hero, especially for Shona, with whom he builds a rocky relationship. He is immature, but can be sensible and puts good ideas forward.

• Shona Campbell (Shelley O'Neill) - Shona is the quietest member of the group, shy and very caring; however, she can let her emotions get the better of her. She can come across as grumpy and serious, but this is mainly because she is easily upset. She has strict parents; knowing they would not let her go on a trip related to UFOs, she pretended it was part of her geography course.

• David Hedges (Gordon McCorkell) - A science and UFO buff, David has extensive knowledge of flora and fauna, and an impeccable sense of direction. He is close friends with Harry but can get easily agitated; his insistence on believing that aliens are responsible for their predicament puts strain on the group's relationship. After the first series, both David and Sarah were not part of the main cast, being seen in flashes in the second series, and at the very start of the third.

• Sarah Fitzwilliam (Kari Corbett) - Environmentally-conscious Sarah is known as "tree hugger" or "hippy", having keen interest in the environment and taking part in protests with her mother. She is the first member of the group to witness what she believes to be alien contact.

• Gerry Simmons (Steven Vidler) - The group's teacher and leader, in charge of the Falkirk academy UFO club. He planned the trip, but disappeared in the first series when he disappeared over a waterfall. He is later found at the end of the series, having been found and tied up by a diamond thief, before being abducted with the rest of the group. He is the only one to have any memory of the encounter, and is believed to be mentally unstable by the government. He appears briefly in the second series when the group find him in the hospital, and he later reappeares in the third series, helping them to find Astrid Island.

• Helen Stanich (Caroline Dunphy) - Stanich is responsible for monitoring abductees in Australia, appearing in the second and third series. Her goals are never entirely clear to the group; in the beginning, she lies by telling the group that Sarah and David have been rescued with the rest of the group, when in reality they have not returned from their abduction. She both helps and hinders the group throughout the journey, letting them escape, and lying and keeping the truth hidden.

• Melissa (Tammy MacIntosh) - Melissa is a park ranger in the first series. She was to help Gerry Simmons, the group's teacher, during their expedition. Shortly after realising the anti-venom was gone, Melissa treks out into the bush to find the jeeps and get help. She crashes, and tries to return to base-camp, but is captured by the diamond smugglers. She is found by the group shortly after finding Gerry, and was last seen waiting for the police while guarding her boss Arne, who was assisting his brother, the diamond smuggler. She was not seen again, and her fate is unknown.