In Treasure of Khan, Dirk helps rescue his sister after she is kidnapped on a research mission.
Hiram and Max will occasionally work all night together when doing research for coworkers as they did in Treasure of Khan, where they dug up earthquake data and cross referenced it with a custom program to test the characteristics of quakes.
In Treasure of Khan, Summer is kidnapped on a diving expedition and later escapes with the help of her brother.
Genghis Khan | Chaka Khan | Treasure Island | Shahrukh Khan | Salman Khan | Aamir Khan | Imran Khan | Khan | Aga Khan IV | Aga Khan | Ali Akbar Khan | Khan (title) | Saif Ali Khan | Order of the Sacred Treasure | Kublai Khan | Ghazi ud-Din Khan Feroze Jung II | Aga Khan III | Aga Khan Award for Architecture | Irrfan Khan | Dera Ismail Khan | Ayub Khan | Spanish treasure fleet | Nusrat Fateh Ali Khan | Hulagu Khan | Prince Aly Khan | Kubla Khan | Kader Khan | Imrat Khan | Güyük Khan | Farah Khan |