Djinn and Water

S1 E10: Jeannie gets involved with the law when, invisible to everyone, she attempts to drive Tony's car. Angered, Tony orders her to leave. Jeannie is aware that Tony has been studying the desalinization of seawater. Playing for time, she tells Tony her great grandfather solved the problem. Tony asks to meet her great grandfather and Jeannie goes to get him. Tony phones Leslie Staples at the Department of Agriculture and tells him he is on the verge of converting salt water to fresh. Jeannie returns with her great grandfather, Bilejik, who proves that he can produce fresh water from salt water. Tony returns to find Bilejik, Jeannie and a policeman is front of his house. Bilejik has been causing all sorts of trouble with the neighbors. While resolving the matter, Tony discovers that Bilejik has used seeds as a filter. After Bilejik leaves, Tony jubilantly reports to Staples. Staples tells him that these seeds are from a plant extinct for almost two thousand years.